1312110213012 has 96 divisors (see below), whose sum is σ = 3458085335040. Its totient is φ = 430131461760.

The previous prime is 1312110212977. The next prime is 1312110213023. The reversal of 1312110213012 is 2103120112131.

1312110213012 is a `hidden beast` number, since 131 + 211 + 0 + 21 + 301 + 2 = 666.

It is a super-2 number, since 2×1312110213012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56625453 + ... + 56648619.

It is an arithmetic number, because the mean of its divisors is an integer number (36021722240).

Almost surely, 2^{1312110213012} is an apocalyptic number.

1312110213012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312110213012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729042667520).

1312110213012 is an abundant number, since it is smaller than the sum of its proper divisors (2145975122028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312110213012 is a wasteful number, since it uses less digits than its factorization.

1312110213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31838 (or 31830 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1312110213012 its reverse (2103120112131), we get a palindrome (3415230325143).

The spelling of 1312110213012 in words is "one trillion, three hundred twelve billion, one hundred ten million, two hundred thirteen thousand, twelve".