12113132121 has 40 divisors (see below), whose sum is σ = 18582676640. Its totient is φ = 7859109888.

The previous prime is 12113132093. The next prime is 12113132123. The reversal of 12113132121 is 12123131121.

It is not a de Polignac number, because 12113132121 - 2¹⁹ = 12112607833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12113132094 and 12113132103.

It is not an unprimeable number, because it can be changed into a prime (12113132123) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 979545 + ... + 991833.

It is an arithmetic number, because the mean of its divisors is an integer number (464566916).

Almost surely, 2^12113132121 is an apocalyptic number.

It is an amenable number.

12113132121 is a deficient number, since it is larger than the sum of its proper divisors (6469544519).

12113132121 is a wasteful number, since it uses less digits than its factorization.

12113132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12627 (or 12618 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12113132121 its reverse (12123131121), we get a palindrome (24236263242).

The spelling of 12113132121 in words is "twelve billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred twenty-one".