22012120100 has 36 divisors (see below), whose sum is σ = 49843101504. Its totient is φ = 8422027680.

The previous prime is 22012120073. The next prime is 22012120111. The reversal of 22012120100 is 102121022.

It is a happy 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, 4782944 + ... + 4787543.

Almost surely, 2^22012120100 is an apocalyptic number.

22012120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012120100 is an abundant number, since it is smaller than the sum of its proper divisors (27830981404).

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

22012120100 is a wasteful number, since it uses less digits than its factorization.

22012120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570524 (or 9570517 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22012120100 its reverse (102121022), we get a palindrome (22114241122).

The spelling of 22012120100 in words is "twenty-two billion, twelve million, one hundred twenty thousand, one hundred".