12322813255421 has 2 divisors, whose sum is σ = 12322813255422. Its totient is φ = 12322813255420.

The previous prime is 12322813255399. The next prime is 12322813255453. The reversal of 12322813255421 is 12455231822321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8728414363321 + 3594398892100 = 2954389^2 + 1895890^2 .

It is an emirp because it is prime and its reverse (12455231822321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12322813255421 - 2¹⁸ = 12322812993277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12322813255021) 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, 6161406627710 + 6161406627711.

It is an arithmetic number, because the mean of its divisors is an integer number (6161406627711).

Almost surely, 2^{12322813255421} is an apocalyptic number.

It is an amenable number.

12322813255421 is a deficient number, since it is larger than the sum of its proper divisors (1).

12322813255421 is an equidigital number, since it uses as much as digits as its factorization.

12322813255421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 41.

The spelling of 12322813255421 in words is "twelve trillion, three hundred twenty-two billion, eight hundred thirteen million, two hundred fifty-five thousand, four hundred twenty-one".