21322013113021 has 4 divisors (see below), whose sum is σ = 21323664586944. Its totient is φ = 21320361639100.

The previous prime is 21322013112989. The next prime is 21322013113031. The reversal of 21322013113021 is 12031131022312.

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 21322013113021 - 2⁵ = 21322013112989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322013112983 and 21322013113001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322013113031) 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 3 ways as a sum of consecutive naturals, for example, 825717595 + ... + 825743416.

It is an arithmetic number, because the mean of its divisors is an integer number (5330916146736).

Almost surely, 2^{21322013113021} is an apocalyptic number.

It is an amenable number.

21322013113021 is a deficient number, since it is larger than the sum of its proper divisors (1651473923).

21322013113021 is a wasteful number, since it uses less digits than its factorization.

21322013113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651473922.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21322013113021 its reverse (12031131022312), we get a palindrome (33353144135333).

The spelling of 21322013113021 in words is "twenty-one trillion, three hundred twenty-two billion, thirteen million, one hundred thirteen thousand, twenty-one".