using System;

public class Program

{

    public static void Main()

    {

    int number = 1322112229;

    string result = "" + number;

    string words = "";

    string[] unit = { "","one","two","three", "four","five", "six","seven", "eight", "nine", "ten","eleven", "twelve","thirteen", "fourteen", "fifteen", "sixteen","seventeen", "eighteen", "nineteen"};

    string[] ten = { "", "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety" };

    char [] arrayOfDigits = new char[result.Length];    

    for (int index = 0; index < result.Length; index++) {

        arrayOfDigits[index] = result[index];

    }

    int position = result.Length -1;

    for (int z = 0; z < result.Length; z++) {

        if(position == 9 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " billion and ";

            position--;

        }   

        else if(position == 8 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " hundred ";

            position--;

            //}

        }

        else if(position == 7 ){

            if(arrayOfDigits[z] != '0' && arrayOfDigits[z] != '1'){

            words += "" + ten[arrayOfDigits[z] - '0'] + " " + unit[arrayOfDigits[z+1] - '0'] + " million ";

            }if(arrayOfDigits[z] == '1'){

                words += "" + unit[arrayOfDigits[z+1] - '0' + 10] + " million ";

            }

            position-= 2;

            z++;

        }

        else if(position == 6 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " million ";

            position--;

        }

        else if(position == 5 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " hundred ";

            position--;

        }

        else if(position == 4 ){

            if(arrayOfDigits[z] != '0' && arrayOfDigits[z] != '1'){

                words += "" + ten[arrayOfDigits[z] - '0'] + " " + unit[arrayOfDigits[z+1] - '0'] + " thousand ";

            }if(arrayOfDigits[z] == '1'){

                words += "" + unit[arrayOfDigits[z+1] - '0' + 10] + " thousand ";

            }

            position-= 2;

            z++;

        }

        else if(position == 3 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " thousand ";

            position--;

        }

​

        else if(position == 2 ){

            words += "" + unit[arrayOfDigits[z] - '0'] + " hundred ";

            position--;

        }

        else if(position == 1 ){

            if(arrayOfDigits[z] != '0' && arrayOfDigits[z] != '1'){

                words += "" + ten[arrayOfDigits[z] - '0'] + " ";

                position = 0;

            }if(arrayOfDigits[z] == '1'){

                words += "" + unit[arrayOfDigits[z+1] - '0' + 10] + " ";

                position = -1;

            }

        }

        else if(position == 0 ){

            words += "" + unit[arrayOfDigits[z] - '0'];

        }

    }

                Console.WriteLine(words);

    }

}