12210131123231 has 2 divisors, whose sum is σ = 12210131123232. Its totient is φ = 12210131123230.

The previous prime is 12210131123219. The next prime is 12210131123237. The reversal of 12210131123231 is 13232113101221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12210131123231 - 2⁶ = 12210131123167 is a prime.

It is a super-2 number, since 2×12210131123231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12210131123197 and 12210131123206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210131123237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105065561615 + 6105065561616.

It is an arithmetic number, because the mean of its divisors is an integer number (6105065561616).

Almost surely, 2^{12210131123231} is an apocalyptic number.

12210131123231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210131123231 is an equidigital number, since it uses as much as digits as its factorization.

12210131123231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12210131123231 its reverse (13232113101221), we get a palindrome (25442244224452).

The spelling of 12210131123231 in words is "twelve trillion, two hundred ten billion, one hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-one".