21013232303023 has 16 divisors (see below), whose sum is σ = 21697268925600. Its totient is φ = 20335348740096.

The previous prime is 21013232303003. The next prime is 21013232303029. The reversal of 21013232303023 is 32030323231012.

It is a cyclic number.

It is not a de Polignac number, because 21013232303023 - 2²¹ = 21013230205871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013232303029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36123411 + ... + 36700507.

It is an arithmetic number, because the mean of its divisors is an integer number (1356079307850).

Almost surely, 2^{21013232303023} is an apocalyptic number.

21013232303023 is a deficient number, since it is larger than the sum of its proper divisors (684036622577).

21013232303023 is a wasteful number, since it uses less digits than its factorization.

21013232303023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582426.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21013232303023 its reverse (32030323231012), we get a palindrome (53043555534035).

The spelling of 21013232303023 in words is "twenty-one trillion, thirteen billion, two hundred thirty-two million, three hundred three thousand, twenty-three".