321300021999 has 16 divisors (see below), whose sum is σ = 467725192704. Its totient is φ = 194569075200.

The previous prime is 321300021997. The next prime is 321300022013. The reversal of 321300021999 is 999120003123.

It is not a de Polignac number, because 321300021999 - 2¹ = 321300021997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321300021997) 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 in 15 ways as a sum of consecutive naturals, for example, 3914034 + ... + 3995279.

It is an arithmetic number, because the mean of its divisors is an integer number (29232824544).

Almost surely, 2^321300021999 is an apocalyptic number.

321300021999 is a deficient number, since it is larger than the sum of its proper divisors (146425170705).

321300021999 is a wasteful number, since it uses less digits than its factorization.

321300021999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7910558.

The product of its (nonzero) digits is 26244, while the sum is 39.

The spelling of 321300021999 in words is "three hundred twenty-one billion, three hundred million, twenty-one thousand, nine hundred ninety-nine".