0-zero
1-one
2-two
3-three
4-four
5-five
6-six
7-seven
8-eight
9-nine
10-ten
11-eleven
12-twelve
13-thirteen
14-fourteen
15-fifteen
16-sixteen
17-seventeen
18-eighteen
19-nineteen
20-twenty
30-thirty
100-one hundred
101-one hundred one
200-two hundred
1000-one thousand
1000000-one million