521014005013321 has 4 divisors (see below), whose sum is σ = 521014145123200. Its totient is φ = 521013864903444.

The previous prime is 521014005013199. The next prime is 521014005013339. The reversal of 521014005013321 is 123310500410125.

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 521014005013321 - 2¹³ = 521014005005129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 521014005013321.

It is not an unprimeable number, because it can be changed into a prime (521014005013361) 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, 64320561 + ... + 71966398.

It is an arithmetic number, because the mean of its divisors is an integer number (130253536280800).

Almost surely, 2^{521014005013321} is an apocalyptic number.

It is an amenable number.

521014005013321 is a deficient number, since it is larger than the sum of its proper divisors (140109879).

521014005013321 is a wasteful number, since it uses less digits than its factorization.

521014005013321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140109878.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 521014005013321 its reverse (123310500410125), we get a palindrome (644324505423446).

The spelling of 521014005013321 in words is "five hundred twenty-one trillion, fourteen billion, five million, thirteen thousand, three hundred twenty-one".