There are diferent tipes of numbers:
CARDINALS; that numbers refer to the size of a group.
2.-Since 13 to 19 you put the name of the last number with a little alteration an then the suffix -teen.
3.-Since 20 to 90 all the numbers that they
finally in 0 you put the name of the first number with alterations and the suffix -ty.
4.-If a number is in the range 21 to 99, and the second digit is not zero, you put first the third cas and then the number of the first cas.And then you separate then with a haphen.
5.- So too are the hundred, with the number of the hundred followed by the word "hundred".
6.- So too are the thousands, with the number of thousands followed by the word "thousand".
7.- For numbers above a million, with the number of milions followed by the word "milion"