22112321100 has 72 divisors (see below), whose sum is σ = 65707492368. Its totient is φ = 5737248000.

The previous prime is 22112321089. The next prime is 22112321177. The reversal of 22112321100 is 112321122.

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 22112321100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984951 + ... + 1007150.

Almost surely, 2^22112321100 is an apocalyptic number.

22112321100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112321100 is an abundant number, since it is smaller than the sum of its proper divisors (43595171268).

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

22112321100 is a wasteful number, since it uses less digits than its factorization.

22112321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992155 (or 1992148 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22112321100 its reverse (112321122), we get a palindrome (22224642222).

The spelling of 22112321100 in words is "twenty-two billion, one hundred twelve million, three hundred twenty-one thousand, one hundred".