22220020100 has 36 divisors (see below), whose sum is σ = 48288812964. Its totient is φ = 8874852480.

The previous prime is 22220020091. The next prime is 22220020127. The reversal of 22220020100 is 102002222.

It can be written as a sum of positive squares in 6 ways, for example, as 4404711424 + 17815308676 = 66368^2 + 133474^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96407 + ... + 231806.

Almost surely, 2^22220020100 is an apocalyptic number.

22220020100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22220020100 is an abundant number, since it is smaller than the sum of its proper divisors (26068792864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22220020100 is a wasteful number, since it uses less digits than its factorization.

22220020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328904 (or 328897 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22220020100 its reverse (102002222), we get a palindrome (22322022322).

The spelling of 22220020100 in words is "twenty-two billion, two hundred twenty million, twenty thousand, one hundred".