12331231321127 has 2 divisors, whose sum is σ = 12331231321128. Its totient is φ = 12331231321126.

The previous prime is 12331231321007. The next prime is 12331231321139. The reversal of 12331231321127 is 72112313213321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12331231321127 - 2²⁰ = 12331230272551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12331231321093 and 12331231321102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12331231371127) 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, 6165615660563 + 6165615660564.

It is an arithmetic number, because the mean of its divisors is an integer number (6165615660564).

Almost surely, 2^{12331231321127} is an apocalyptic number.

12331231321127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331231321127 is an equidigital number, since it uses as much as digits as its factorization.

12331231321127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

Adding to 12331231321127 its reverse (72112313213321), we get a palindrome (84443544534448).

The spelling of 12331231321127 in words is "twelve trillion, three hundred thirty-one billion, two hundred thirty-one million, three hundred twenty-one thousand, one hundred twenty-seven".