22122112200 has 48 divisors (see below), whose sum is σ = 68578549680. Its totient is φ = 5899229760.

The previous prime is 22122112183. The next prime is 22122112237. The reversal of 22122112200 is 221122122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22122112200.

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, 18434494 + ... + 18435693.

It is an arithmetic number, because the mean of its divisors is an integer number (1428719785).

Almost surely, 2^22122112200 is an apocalyptic number.

22122112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122112200 is an abundant number, since it is smaller than the sum of its proper divisors (46456437480).

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

22122112200 is a wasteful number, since it uses less digits than its factorization.

22122112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36870206 (or 36870197 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22122112200 its reverse (221122122), we get a palindrome (22343234322).

The spelling of 22122112200 in words is "twenty-two billion, one hundred twenty-two million, one hundred twelve thousand, two hundred".