22200012312 has 32 divisors (see below), whose sum is σ = 55514101680. Its totient is φ = 7398128000.

The previous prime is 22200012311. The next prime is 22200012353. The reversal of 22200012312 is 21321000222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22200012291 and 22200012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200012311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18939 + ... + 211562.

Almost surely, 2^22200012312 is an apocalyptic number.

It is an amenable number.

22200012312 is an abundant number, since it is smaller than the sum of its proper divisors (33314089368).

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

22200012312 is a wasteful number, since it uses less digits than its factorization.

22200012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234523 (or 234519 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22200012312 its reverse (21321000222), we get a palindrome (43521012534).

The spelling of 22200012312 in words is "twenty-two billion, two hundred million, twelve thousand, three hundred twelve".