12113422521 has 8 divisors (see below), whose sum is σ = 16152111360. Its totient is φ = 8075174352.

The previous prime is 12113422513. The next prime is 12113422547. The reversal of 12113422521 is 12522431121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12113422521 - 2³ = 12113422513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12113422491 and 12113422500.

It is not an unprimeable number, because it can be changed into a prime (12113422511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39561 + ... + 160598.

It is an arithmetic number, because the mean of its divisors is an integer number (2019013920).

Almost surely, 2^12113422521 is an apocalyptic number.

It is an amenable number.

12113422521 is a deficient number, since it is larger than the sum of its proper divisors (4038688839).

12113422521 is a wasteful number, since it uses less digits than its factorization.

12113422521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220335.

The product of its digits is 960, while the sum is 24.

Adding to 12113422521 its reverse (12522431121), we get a palindrome (24635853642).

The spelling of 12113422521 in words is "twelve billion, one hundred thirteen million, four hundred twenty-two thousand, five hundred twenty-one".