21331030300321 has 16 divisors (see below), whose sum is σ = 24421956818944. Its totient is φ = 18251016505344.

The previous prime is 21331030300297. The next prime is 21331030300331. The reversal of 21331030300321 is 12300303013312.

It is not a de Polignac number, because 21331030300321 - 2²⁷ = 21330896082593 is a prime.

It is a super-2 number, since 2×21331030300321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21331030300292 and 21331030300301.

It is not an unprimeable number, because it can be changed into a prime (21331030300331) 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 15 ways as a sum of consecutive naturals, for example, 75764416 + ... + 76045438.

It is an arithmetic number, because the mean of its divisors is an integer number (1526372301184).

Almost surely, 2^{21331030300321} is an apocalyptic number.

It is an amenable number.

21331030300321 is a deficient number, since it is larger than the sum of its proper divisors (3090926518623).

21331030300321 is a wasteful number, since it uses less digits than its factorization.

21331030300321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300400.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21331030300321 its reverse (12300303013312), we get a palindrome (33631333313633).

The spelling of 21331030300321 in words is "twenty-one trillion, three hundred thirty-one billion, thirty million, three hundred thousand, three hundred twenty-one".