21304320533301 has 16 divisors (see below), whose sum is σ = 30618961716224. Its totient is φ = 13098290030784.

The previous prime is 21304320533207. The next prime is 21304320533323. The reversal of 21304320533301 is 10333502340312.

It is not a de Polignac number, because 21304320533301 - 2⁷ = 21304320533173 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 (21304320533371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251229286 + ... + 251314071.

It is an arithmetic number, because the mean of its divisors is an integer number (1913685107264).

Almost surely, 2^{21304320533301} is an apocalyptic number.

It is an amenable number.

21304320533301 is a deficient number, since it is larger than the sum of its proper divisors (9314641182923).

21304320533301 is a wasteful number, since it uses less digits than its factorization.

21304320533301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502544460.

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 21304320533301 its reverse (10333502340312), we get a palindrome (31637822873613).

The spelling of 21304320533301 in words is "twenty-one trillion, three hundred four billion, three hundred twenty million, five hundred thirty-three thousand, three hundred one".