321420004031021 has 8 divisors (see below), whose sum is σ = 368446927368384. Its totient is φ = 274670525669760.

The previous prime is 321420004030973. The next prime is 321420004031083. The reversal of 321420004031021 is 120130400024123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321420004031021 - 2¹⁰ = 321420004029997 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 (321420004031521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69361241540 + ... + 69361246173.

It is an arithmetic number, because the mean of its divisors is an integer number (46055865921048).

Almost surely, 2^{321420004031021} is an apocalyptic number.

It is an amenable number.

321420004031021 is a deficient number, since it is larger than the sum of its proper divisors (47026923337363).

321420004031021 is a wasteful number, since it uses less digits than its factorization.

321420004031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138722488051.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 321420004031021 its reverse (120130400024123), we get a palindrome (441550404055144).

The spelling of 321420004031021 in words is "three hundred twenty-one trillion, four hundred twenty billion, four million, thirty-one thousand, twenty-one".