22120012312 has 8 divisors (see below), whose sum is σ = 41475023100. Its totient is φ = 11060006152.

The previous prime is 22120012261. The next prime is 22120012331. The reversal of 22120012312 is 21321002122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1382500762 + ... + 1382500777.

Almost surely, 2^22120012312 is an apocalyptic number.

It is an amenable number.

22120012312 is a deficient number, since it is larger than the sum of its proper divisors (19355010788).

22120012312 is a wasteful number, since it uses less digits than its factorization.

22120012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765001545 (or 2765001541 counting only the distinct ones).

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

Adding to 22120012312 its reverse (21321002122), we get a palindrome (43441014434).

The spelling of 22120012312 in words is "twenty-two billion, one hundred twenty million, twelve thousand, three hundred twelve".