1312123131022 has 32 divisors (see below), whose sum is σ = 2193236642304. Its totient is φ = 583611936000.

The previous prime is 1312123130993. The next prime is 1312123131073. The reversal of 1312123131022 is 2201313212131.

It is a super-2 number, since 2×1312123131022² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1312123130984 and 1312123131002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5097118 + ... + 5348350.

It is an arithmetic number, because the mean of its divisors is an integer number (68538645072).

Almost surely, 2^{1312123131022} is an apocalyptic number.

1312123131022 is a deficient number, since it is larger than the sum of its proper divisors (881113511282).

1312123131022 is a wasteful number, since it uses less digits than its factorization.

1312123131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256344.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1312123131022 its reverse (2201313212131), we get a palindrome (3513436343153).

The spelling of 1312123131022 in words is "one trillion, three hundred twelve billion, one hundred twenty-three million, one hundred thirty-one thousand, twenty-two".