121131210112331 has 4 divisors (see below), whose sum is σ = 121181202359952. Its totient is φ = 121081217864712.

The previous prime is 121131210112271. The next prime is 121131210112343. The reversal of 121131210112331 is 133211012131121.

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 121131210112331 - 2³⁸ = 120856332205387 is a prime.

It is a super-2 number, since 2×121131210112331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121131210112297 and 121131210112306.

It is not an unprimeable number, because it can be changed into a prime (121131210112391) 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, 24996120176 + ... + 24996125021.

It is an arithmetic number, because the mean of its divisors is an integer number (30295300589988).

Almost surely, 2^{121131210112331} is an apocalyptic number.

121131210112331 is a deficient number, since it is larger than the sum of its proper divisors (49992247621).

121131210112331 is an equidigital number, since it uses as much as digits as its factorization.

121131210112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49992247620.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 121131210112331 its reverse (133211012131121), we get a palindrome (254342222243452).

The spelling of 121131210112331 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred ten million, one hundred twelve thousand, three hundred thirty-one".