122531522131 has 4 divisors (see below), whose sum is σ = 122532291112. Its totient is φ = 122530753152.

The previous prime is 122531522119. The next prime is 122531522143. The reversal of 122531522131 is 131225135221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (122531522119) and next prime (122531522143).

It is a cyclic number.

It is not a de Polignac number, because 122531522131 - 2²⁵ = 122497967699 is a prime.

It is a super-2 number, since 2×122531522131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122531522131.

It is not an unprimeable number, because it can be changed into a prime (122531522171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46350 + ... + 497203.

It is an arithmetic number, because the mean of its divisors is an integer number (30633072778).

Almost surely, 2^122531522131 is an apocalyptic number.

122531522131 is a deficient number, since it is larger than the sum of its proper divisors (768981).

122531522131 is an equidigital number, since it uses as much as digits as its factorization.

122531522131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768980.

The product of its digits is 3600, while the sum is 28.

Adding to 122531522131 its reverse (131225135221), we get a palindrome (253756657352).

The spelling of 122531522131 in words is "one hundred twenty-two billion, five hundred thirty-one million, five hundred twenty-two thousand, one hundred thirty-one".