21300332320021 has 8 divisors (see below), whose sum is σ = 21380483500544. Its totient is φ = 21220192553040.

The previous prime is 21300332319979. The next prime is 21300332320061. The reversal of 21300332320021 is 12002323300312.

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 21300332320021 - 2³⁵ = 21265972581653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300332319974 and 21300332320001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300332320061) 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, 895351 + ... + 6588043.

It is an arithmetic number, because the mean of its divisors is an integer number (2672560437568).

Almost surely, 2^{21300332320021} is an apocalyptic number.

It is an amenable number.

21300332320021 is a deficient number, since it is larger than the sum of its proper divisors (80151180523).

21300332320021 is a wasteful number, since it uses less digits than its factorization.

21300332320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706771.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21300332320021 its reverse (12002323300312), we get a palindrome (33302655620333).

The spelling of 21300332320021 in words is "twenty-one trillion, three hundred billion, three hundred thirty-two million, three hundred twenty thousand, twenty-one".