1312221032131 has 16 divisors (see below), whose sum is σ = 1384253798400. Its totient is φ = 1240486228800.

The previous prime is 1312221032071. The next prime is 1312221032153. The reversal of 1312221032131 is 1312301222131.

It is a cyclic number.

It is not a de Polignac number, because 1312221032131 - 2¹⁷ = 1312220901059 is a prime.

It is a super-2 number, since 2×1312221032131² (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 (1312221042131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52244266 + ... + 52269376.

It is an arithmetic number, because the mean of its divisors is an integer number (86515862400).

Almost surely, 2^{1312221032131} is an apocalyptic number.

1312221032131 is a deficient number, since it is larger than the sum of its proper divisors (72032766269).

1312221032131 is a wasteful number, since it uses less digits than its factorization.

1312221032131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30930.

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

Adding to 1312221032131 its reverse (1312301222131), we get a palindrome (2624522254262).

The spelling of 1312221032131 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, thirty-two thousand, one hundred thirty-one".