22102012312 has 16 divisors (see below), whose sum is σ = 41451624360. Its totient is φ = 11048245824.

The previous prime is 22102012249. The next prime is 22102012319. The reversal of 22102012312 is 21321020122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102012319) 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, 310813 + ... + 375244.

Almost surely, 2^22102012312 is an apocalyptic number.

It is an amenable number.

22102012312 is a deficient number, since it is larger than the sum of its proper divisors (19349612048).

22102012312 is a wasteful number, since it uses less digits than its factorization.

22102012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690090 (or 690086 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22102012312 its reverse (21321020122), we get a palindrome (43423032434).

It can be divided in two parts, 221020 and 12312, that added together give a palindrome (233332).

The spelling of 22102012312 in words is "twenty-two billion, one hundred two million, twelve thousand, three hundred twelve".