321012321009999 has 4 divisors (see below), whose sum is σ = 428016428013336. Its totient is φ = 214008214006664.

The previous prime is 321012321009931. The next prime is 321012321010001. The reversal of 321012321009999 is 999900123210123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321012321009999 - 2¹⁷ = 321012320878927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012321059999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53502053501664 + ... + 53502053501669.

It is an arithmetic number, because the mean of its divisors is an integer number (107004107003334).

Almost surely, 2^{321012321009999} is an apocalyptic number.

321012321009999 is a deficient number, since it is larger than the sum of its proper divisors (107004107003337).

321012321009999 is a wasteful number, since it uses less digits than its factorization.

321012321009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107004107003336.

The product of its (nonzero) digits is 472392, while the sum is 51.

The spelling of 321012321009999 in words is "three hundred twenty-one trillion, twelve billion, three hundred twenty-one million, nine thousand, nine hundred ninety-nine".