21013303213323 has 24 divisors (see below), whose sum is σ = 31950253183680. Its totient is φ = 13271476218480.

The previous prime is 21013303213321. The next prime is 21013303213339. The reversal of 21013303213323 is 32331230331012.

21013303213323 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 3 + 3 + 0 + 321 + 332 + 3 = 666.

It is not a de Polignac number, because 21013303213323 - 2¹ = 21013303213321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21013303213321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37740868 + ... + 38293598.

It is an arithmetic number, because the mean of its divisors is an integer number (1331260549320).

Almost surely, 2^{21013303213323} is an apocalyptic number.

21013303213323 is a deficient number, since it is larger than the sum of its proper divisors (10936949970357).

21013303213323 is a wasteful number, since it uses less digits than its factorization.

21013303213323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775079 (or 775076 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21013303213323 its reverse (32331230331012), we get a palindrome (53344533544335).

The spelling of 21013303213323 in words is "twenty-one trillion, thirteen billion, three hundred three million, two hundred thirteen thousand, three hundred twenty-three".