12232112131 has 4 divisors (see below), whose sum is σ = 12232358064. Its totient is φ = 12231866200.

The previous prime is 12232112117. The next prime is 12232112147. The reversal of 12232112131 is 13121123221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13121123221 = 59 ⋅222391919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12232112131 is a prime.

It is a super-2 number, since 2×12232112131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12232112099 and 12232112108.

It is not an unprimeable number, because it can be changed into a prime (12232112111) 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, 19135 + ... + 157576.

It is an arithmetic number, because the mean of its divisors is an integer number (3058089516).

Almost surely, 2^12232112131 is an apocalyptic number.

12232112131 is a deficient number, since it is larger than the sum of its proper divisors (245933).

12232112131 is an equidigital number, since it uses as much as digits as its factorization.

12232112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245932.

The product of its digits is 144, while the sum is 19.

Adding to 12232112131 its reverse (13121123221), we get a palindrome (25353235352).

The spelling of 12232112131 in words is "twelve billion, two hundred thirty-two million, one hundred twelve thousand, one hundred thirty-one".