321331012999 has 2 divisors, whose sum is σ = 321331013000. Its totient is φ = 321331012998.

The previous prime is 321331012993. The next prime is 321331013057. The reversal of 321331012999 is 999210133123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321331012999 - 2⁵ = 321331012967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321331012993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160665506499 + 160665506500.

It is an arithmetic number, because the mean of its divisors is an integer number (160665506500).

Almost surely, 2^321331012999 is an apocalyptic number.

321331012999 is a deficient number, since it is larger than the sum of its proper divisors (1).

321331012999 is an equidigital number, since it uses as much as digits as its factorization.

321331012999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 43.

The spelling of 321331012999 in words is "three hundred twenty-one billion, three hundred thirty-one million, twelve thousand, nine hundred ninety-nine".