Ken's POTW

Alphabetical Numbers
  1. What numbers, when written alphabetically (i.e. "one", "two", etc.), have their letters in alphabetical order?
  2. The numbers from 1 (one) to 1,000,000 (one million) are written alphabetically, then they are put in alphabetical order. [In this puzzle, consider spaces to come before the letter a. For example, "Nine thousand, four hundred, thirty-six" comes before "Nineteen".]
    1. What number comes first in this list?
    2. What number comes last?
    3. At what position is the number "one" in this list?

Source: Many places.

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