12231131233021 has 2 divisors, whose sum is σ = 12231131233022. Its totient is φ = 12231131233020.

The previous prime is 12231131233003. The next prime is 12231131233039. The reversal of 12231131233021 is 12033213113221.

It is a balanced prime because it is at equal distance from previous prime (12231131233003) and next prime (12231131233039).

It can be written as a sum of positive squares in only one way, i.e., 9254767887225 + 2976363345796 = 3042165^2 + 1725214^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231131233021 - 2³⁷ = 12093692279549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231131233001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115565616510 + 6115565616511.

It is an arithmetic number, because the mean of its divisors is an integer number (6115565616511).

Almost surely, 2^{12231131233021} is an apocalyptic number.

It is an amenable number.

12231131233021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231131233021 is an equidigital number, since it uses as much as digits as its factorization.

12231131233021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12231131233021 its reverse (12033213113221), we get a palindrome (24264344346242).

The spelling of 12231131233021 in words is "twelve trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred thirty-three thousand, twenty-one".