22112012312 has 16 divisors (see below), whose sum is σ = 44649255840. Its totient is φ = 10205544096.

The previous prime is 22112012311. The next prime is 22112012317. The reversal of 22112012312 is 21321021122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112012311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106307648 + ... + 106307855.

It is an arithmetic number, because the mean of its divisors is an integer number (2790578490).

Almost surely, 2^22112012312 is an apocalyptic number.

It is an amenable number.

22112012312 is an abundant number, since it is smaller than the sum of its proper divisors (22537243528).

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

22112012312 is a wasteful number, since it uses less digits than its factorization.

22112012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212615522 (or 212615518 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22112012312 its reverse (21321021122), we get a palindrome (43433033434).

The spelling of 22112012312 in words is "twenty-two billion, one hundred twelve million, twelve thousand, three hundred twelve".