12113531121 has 16 divisors (see below), whose sum is σ = 16596860544. Its totient is φ = 7853180544.

The previous prime is 12113531119. The next prime is 12113531137.

12113531121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12113531121 - 2¹ = 12113531119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12113531321) 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, 183820 + ... + 240866.

It is an arithmetic number, because the mean of its divisors is an integer number (1037303784).

Almost surely, 2^12113531121 is an apocalyptic number.

It is an amenable number.

12113531121 is a deficient number, since it is larger than the sum of its proper divisors (4483329423).

12113531121 is a wasteful number, since it uses less digits than its factorization.

12113531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59000.

The product of its digits is 180, while the sum is 21.

The spelling of 12113531121 in words is "twelve billion, one hundred thirteen million, five hundred thirty-one thousand, one hundred twenty-one".