12101131211031 has 32 divisors (see below), whose sum is σ = 18410231347200. Its totient is φ = 7853114112480.

The previous prime is 12101131211009. The next prime is 12101131211033. The reversal of 12101131211031 is 13011213110121.

12101131211031 is a `hidden beast` number, since 1 + 210 + 1 + 1 + 312 + 110 + 31 = 666.

It is not a de Polignac number, because 12101131211031 - 2²⁶ = 12101064102167 is a prime.

It is a super-2 number, since 2×12101131211031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12101131210995 and 12101131211013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101131211033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39801316 + ... + 40104201.

It is an arithmetic number, because the mean of its divisors is an integer number (575319729600).

Almost surely, 2^{12101131211031} is an apocalyptic number.

12101131211031 is a deficient number, since it is larger than the sum of its proper divisors (6309100136169).

12101131211031 is an equidigital number, since it uses as much as digits as its factorization.

12101131211031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79905676 (or 79905670 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 12101131211031 its reverse (13011213110121), we get a palindrome (25112344321152).

The spelling of 12101131211031 in words is "twelve trillion, one hundred one billion, one hundred thirty-one million, two hundred eleven thousand, thirty-one".