12111201131031 has 16 divisors (see below), whose sum is σ = 18997962559200. Its totient is φ = 7599185023104.

The previous prime is 12111201131027. The next prime is 12111201131039. The reversal of 12111201131031 is 13013110211121.

12111201131031 is a `hidden beast` number, since 12 + 111 + 201 + 1 + 310 + 31 = 666.

It is not a de Polignac number, because 12111201131031 - 2² = 12111201131027 is a prime.

It is a super-2 number, since 2×12111201131031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12111201130995 and 12111201131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111201131039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13193029096 + ... + 13193030013.

It is an arithmetic number, because the mean of its divisors is an integer number (1187372659950).

Almost surely, 2^{12111201131031} is an apocalyptic number.

12111201131031 is a deficient number, since it is larger than the sum of its proper divisors (6886761428169).

12111201131031 is a wasteful number, since it uses less digits than its factorization.

12111201131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26386059135 (or 26386059129 counting only the distinct ones).

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

Adding to 12111201131031 its reverse (13013110211121), we get a palindrome (25124311342152).

The spelling of 12111201131031 in words is "twelve trillion, one hundred eleven billion, two hundred one million, one hundred thirty-one thousand, thirty-one".