1312122212131 has 4 divisors (see below), whose sum is σ = 1325113521264. Its totient is φ = 1299130903000.

The previous prime is 1312122212117. The next prime is 1312122212147.

It is a happy number.

1312122212131 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312122212131 - 2¹³ = 1312122203939 is a prime.

It is a super-2 number, since 2×1312122212131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312122212111) 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, 6495654415 + ... + 6495654616.

It is an arithmetic number, because the mean of its divisors is an integer number (331278380316).

Almost surely, 2^{1312122212131} is an apocalyptic number.

1312122212131 is a deficient number, since it is larger than the sum of its proper divisors (12991309133).

1312122212131 is a wasteful number, since it uses less digits than its factorization.

1312122212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12991309132.

The product of its digits is 288, while the sum is 22.

Multiplying 1312122212131 by its sum of digits (22), we get a palindrome (28866688666882).

The spelling of 1312122212131 in words is "one trillion, three hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirty-one".