1312012213112 has 16 divisors (see below), whose sum is σ = 2460123225000. Its totient is φ = 655979353120.

The previous prime is 1312012213111. The next prime is 1312012213117. The reversal of 1312012213112 is 2113122102131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312012213111) 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, 3134987 + ... + 3528762.

Almost surely, 2^{1312012213112} is an apocalyptic number.

It is an amenable number.

1312012213112 is a deficient number, since it is larger than the sum of its proper divisors (1148111011888).

1312012213112 is a wasteful number, since it uses less digits than its factorization.

1312012213112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688366 (or 6688362 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1312012213112 its reverse (2113122102131), we get a palindrome (3425134315243).

The spelling of 1312012213112 in words is "one trillion, three hundred twelve billion, twelve million, two hundred thirteen thousand, one hundred twelve".