22102321312 has 12 divisors (see below), whose sum is σ = 43513945146. Its totient is φ = 11051160640.

The previous prime is 22102321303. The next prime is 22102321327. The reversal of 22102321312 is 21312320122.

It can be written as a sum of positive squares in only one way, i.e., 21163266576 + 939054736 = 145476^2 + 30644^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22102321312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345348739 + ... + 345348802.

Almost surely, 2^22102321312 is an apocalyptic number.

It is an amenable number.

22102321312 is a deficient number, since it is larger than the sum of its proper divisors (21411623834).

22102321312 is an equidigital number, since it uses as much as digits as its factorization.

22102321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690697551 (or 690697543 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22102321312 its reverse (21312320122), we get a palindrome (43414641434).

The spelling of 22102321312 in words is "twenty-two billion, one hundred two million, three hundred twenty-one thousand, three hundred twelve".