21331013331303 has 64 divisors (see below), whose sum is σ = 34954170496000. Its totient is φ = 12771272384640.

The previous prime is 21331013331227. The next prime is 21331013331311. The reversal of 21331013331303 is 30313331013312.

21331013331303 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 10 + 13 + 331 + 303 = 666.

It is not a de Polignac number, because 21331013331303 - 2⁹ = 21331013330791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331013331403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304263348 + ... + 304333446.

It is an arithmetic number, because the mean of its divisors is an integer number (546158914000).

Almost surely, 2^{21331013331303} is an apocalyptic number.

21331013331303 is a deficient number, since it is larger than the sum of its proper divisors (13623157164697).

21331013331303 is a wasteful number, since it uses less digits than its factorization.

21331013331303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93589 (or 93583 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 27.

Adding to 21331013331303 its reverse (30313331013312), we get a palindrome (51644344344615).

The spelling of 21331013331303 in words is "twenty-one trillion, three hundred thirty-one billion, thirteen million, three hundred thirty-one thousand, three hundred three".