21232023031002 has 64 divisors (see below), whose sum is σ = 50096770596864. Its totient is φ = 5870495589120.

The previous prime is 21232023030949. The next prime is 21232023031019. The reversal of 21232023031002 is 20013032023212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21232023031002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89815003 + ... + 90051089.

It is an arithmetic number, because the mean of its divisors is an integer number (782762040576).

Almost surely, 2^{21232023031002} is an apocalyptic number.

21232023031002 is an abundant number, since it is smaller than the sum of its proper divisors (28864747565862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21232023031002 is a wasteful number, since it uses less digits than its factorization.

21232023031002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305203.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21232023031002 its reverse (20013032023212), we get a palindrome (41245055054214).

The spelling of 21232023031002 in words is "twenty-one trillion, two hundred thirty-two billion, twenty-three million, thirty-one thousand, two".