12131313121 has 16 divisors (see below), whose sum is σ = 12388334400. Its totient is φ = 11877572608.

The previous prime is 12131313113. The next prime is 12131313127.

12131313121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12131313121 - 2³ = 12131313113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131313127) 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, 4092786 + ... + 4095748.

It is an arithmetic number, because the mean of its divisors is an integer number (774270900).

Almost surely, 2^12131313121 is an apocalyptic number.

It is an amenable number.

12131313121 is a deficient number, since it is larger than the sum of its proper divisors (257021279).

12131313121 is a wasteful number, since it uses less digits than its factorization.

12131313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488.

The product of its digits is 108, while the sum is 19.

The spelling of 12131313121 in words is "twelve billion, one hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-one".