321204120010421 has 16 divisors (see below), whose sum is σ = 341634877516800. Its totient is φ = 300946927461120.

The previous prime is 321204120010369. The next prime is 321204120010441. The reversal of 321204120010421 is 124010021402123.

It is a cyclic number.

It is not a de Polignac number, because 321204120010421 - 2⁶ = 321204120010357 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 (321204120010441) 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, 40993865 + ... + 48196526.

It is an arithmetic number, because the mean of its divisors is an integer number (21352179844800).

Almost surely, 2^{321204120010421} is an apocalyptic number.

It is an amenable number.

321204120010421 is a deficient number, since it is larger than the sum of its proper divisors (20430757506379).

321204120010421 is a wasteful number, since it uses less digits than its factorization.

321204120010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89191364.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 321204120010421 its reverse (124010021402123), we get a palindrome (445214141412544).

The spelling of 321204120010421 in words is "three hundred twenty-one trillion, two hundred four billion, one hundred twenty million, ten thousand, four hundred twenty-one".