22331322312 has 64 divisors (see below), whose sum is σ = 61257228480. Its totient is φ = 6741526272.

The previous prime is 22331322289. The next prime is 22331322319. The reversal of 22331322312 is 21322313322.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22331322319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658698 + ... + 691769.

It is an arithmetic number, because the mean of its divisors is an integer number (957144195).

Almost surely, 2^22331322312 is an apocalyptic number.

It is an amenable number.

22331322312 is an abundant number, since it is smaller than the sum of its proper divisors (38925906168).

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

22331322312 is a wasteful number, since it uses less digits than its factorization.

22331322312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350542 (or 1350538 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

Adding to 22331322312 its reverse (21322313322), we get a palindrome (43653635634).

The spelling of 22331322312 in words is "twenty-two billion, three hundred thirty-one million, three hundred twenty-two thousand, three hundred twelve".