22222212122100 has 36 divisors (see below), whose sum is σ = 64296267074144. Its totient is φ = 5925923232480.

The previous prime is 22222212122083. The next prime is 22222212122153. The reversal of 22222212122100 is 122121222222.

It is a congruent number.

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, 37037019904 + ... + 37037020503.

Almost surely, 2^{22222212122100} is an apocalyptic number.

22222212122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222212122100 is an abundant number, since it is smaller than the sum of its proper divisors (42074054952044).

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

22222212122100 is a wasteful number, since it uses less digits than its factorization.

22222212122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74074040424 (or 74074040417 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222212122100 its reverse (122121222222), we get a palindrome (22344333344322).

The spelling of 22222212122100 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty-two thousand, one hundred".