22100031312 has 20 divisors (see below), whose sum is σ = 57091747680. Its totient is φ = 7366677088.

The previous prime is 22100031293. The next prime is 22100031341. The reversal of 22100031312 is 21313000122.

It is a super-2 number, since 2×22100031312² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22100031291 and 22100031300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230208612 + ... + 230208707.

It is an arithmetic number, because the mean of its divisors is an integer number (2854587384).

Almost surely, 2^22100031312 is an apocalyptic number.

It is an amenable number.

22100031312 is an abundant number, since it is smaller than the sum of its proper divisors (34991716368).

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

22100031312 is a wasteful number, since it uses less digits than its factorization.

22100031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460417330 (or 460417324 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 22100031312 its reverse (21313000122), we get a palindrome (43413031434).

The spelling of 22100031312 in words is "twenty-two billion, one hundred million, thirty-one thousand, three hundred twelve".