12112131130331 has 4 divisors (see below), whose sum is σ = 12112353658392. Its totient is φ = 12111908602272.

The previous prime is 12112131130313. The next prime is 12112131130357. The reversal of 12112131130331 is 13303113121121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112131130331 is a prime.

It is a super-2 number, since 2×12112131130331² (a number of 27 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 = 12112131130297 and 12112131130306.

It is not an unprimeable number, because it can be changed into a prime (12112131130531) 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, 111182366 + ... + 111291251.

It is an arithmetic number, because the mean of its divisors is an integer number (3028088414598).

Almost surely, 2^{12112131130331} is an apocalyptic number.

12112131130331 is a deficient number, since it is larger than the sum of its proper divisors (222528061).

12112131130331 is an equidigital number, since it uses as much as digits as its factorization.

12112131130331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222528060.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 12112131130331 its reverse (13303113121121), we get a palindrome (25415244251452).

The spelling of 12112131130331 in words is "twelve trillion, one hundred twelve billion, one hundred thirty-one million, one hundred thirty thousand, three hundred thirty-one".