12112100131 has 4 divisors (see below), whose sum is σ = 12112324264. Its totient is φ = 12111876000.

The previous prime is 12112100093. The next prime is 12112100141. The reversal of 12112100131 is 13100121121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13100121121 = 19 ⋅689480059.

It is a cyclic number.

It is not a de Polignac number, because 12112100131 - 2¹⁹ = 12111575843 is a prime.

It is a super-2 number, since 2×12112100131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112100141) 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, 24331 + ... + 157531.

It is an arithmetic number, because the mean of its divisors is an integer number (3028081066).

Almost surely, 2^12112100131 is an apocalyptic number.

12112100131 is a deficient number, since it is larger than the sum of its proper divisors (224133).

12112100131 is an equidigital number, since it uses as much as digits as its factorization.

12112100131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224132.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12112100131 its reverse (13100121121), we get a palindrome (25212221252).

The spelling of 12112100131 in words is "twelve billion, one hundred twelve million, one hundred thousand, one hundred thirty-one".