22213131312 has 40 divisors (see below), whose sum is σ = 57391589104. Its totient is φ = 7403387904.

The previous prime is 22213131271. The next prime is 22213131323. The reversal of 22213131312 is 21313131222.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391668 + ... + 444780.

Almost surely, 2^22213131312 is an apocalyptic number.

It is an amenable number.

22213131312 is an abundant number, since it is smaller than the sum of its proper divisors (35178457792).

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

22213131312 is a wasteful number, since it uses less digits than its factorization.

22213131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61837 (or 61831 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 22213131312 its reverse (21313131222), we get a palindrome (43526262534).

It can be divided in two parts, 22 and 213131312, that multiplied together give a palindrome (4688888864).

The spelling of 22213131312 in words is "twenty-two billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred twelve".