Letters and Numbers

This is what I thought about as I was getting Meyer to bed tonight:

If you write out as words each consecutive whole number . . .

. . . the letter a will not appear until you get to one thousand.

. . . the letter b will not appear until you get to one billion.

. . . the letter d will not appear until you get to one hundred.

. . . the letter m will not appear until you get to one million.

. . . the letter q will not appear until you get to one quadrillion.

. . . I am not sure when the letters c, j, k, and p make their first appearances.

. . . the remaining 17 letters appear in the numbers zero through twenty.