321012321401021 has 4 divisors (see below), whose sum is σ = 321039372253152. Its totient is φ = 320985270548892.

The previous prime is 321012321400999. The next prime is 321012321401047. The reversal of 321012321401021 is 120104123210123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321012321401021 - 2⁴² = 316614274889917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012321491021) 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, 13525408265 + ... + 13525431998.

It is an arithmetic number, because the mean of its divisors is an integer number (80259843063288).

Almost surely, 2^{321012321401021} is an apocalyptic number.

It is an amenable number.

321012321401021 is a deficient number, since it is larger than the sum of its proper divisors (27050852131).

321012321401021 is a wasteful number, since it uses less digits than its factorization.

321012321401021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050852130.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 321012321401021 its reverse (120104123210123), we get a palindrome (441116444611144).

The spelling of 321012321401021 in words is "three hundred twenty-one trillion, twelve billion, three hundred twenty-one million, four hundred one thousand, twenty-one".