12122310231 has 20 divisors (see below), whose sum is σ = 18117919512. Its totient is φ = 8077397328.

The previous prime is 12122310227. The next prime is 12122310247. The reversal of 12122310231 is 13201322121.

12122310231 is a `hidden beast` number, since 1 + 2 + 122 + 310 + 231 = 666.

It is not a de Polignac number, because 12122310231 - 2² = 12122310227 is a prime.

It is a super-2 number, since 2×12122310231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122310331) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124885 + ... + 199601.

Almost surely, 2^12122310231 is an apocalyptic number.

12122310231 is a deficient number, since it is larger than the sum of its proper divisors (5995609281).

12122310231 is an equidigital number, since it uses as much as digits as its factorization.

12122310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76732 (or 76723 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12122310231 its reverse (13201322121), we get a palindrome (25323632352).

It can be divided in two parts, 1212 and 2310231, that multiplied together give a palindrome (2799999972).

The spelling of 12122310231 in words is "twelve billion, one hundred twenty-two million, three hundred ten thousand, two hundred thirty-one".