Consider all possible positive whole numbers less than 10,000,000 not containing the digit 2. These numbers are now arranged in descending order of magnitude.

What would be the 2,222,222nd number?

Now consider all possible positive whole numbers less than 10,000,000 not containing the digits 1 and 2. These numbers are now arranged in descending order of magnitude.

What would be the 1,212,121st number?