1312021112 has 16 divisors (see below), whose sum is σ = 2460786360. Its totient is φ = 655811424.

The previous prime is 1312021097. The next prime is 1312021229. The reversal of 1312021112 is 2111202131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5258 + ... + 51494.

Almost surely, 2^1312021112 is an apocalyptic number.

It is an amenable number.

1312021112 is a deficient number, since it is larger than the sum of its proper divisors (1148765248).

1312021112 is a wasteful number, since it uses less digits than its factorization.

1312021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49790 (or 49786 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1312021112 is about 36221.8319801746. The cubic root of 1312021112 is about 1094.7466069217.

Adding to 1312021112 its reverse (2111202131), we get a palindrome (3423223243).

The spelling of 1312021112 in words is "one billion, three hundred twelve million, twenty-one thousand, one hundred twelve".