21030022021323 has 32 divisors (see below), whose sum is σ = 32340737848320. Its totient is φ = 11906540956800.

The previous prime is 21030022021291. The next prime is 21030022021369. The reversal of 21030022021323 is 32312022003012.

It is a happy number.

It is not a de Polignac number, because 21030022021323 - 2⁵ = 21030022021291 is a prime.

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 21030022021323.

It is not an unprimeable number, because it can be changed into a prime (21030022021373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85960273 + ... + 86204573.

It is an arithmetic number, because the mean of its divisors is an integer number (1010648057760).

Almost surely, 2^{21030022021323} is an apocalyptic number.

21030022021323 is a deficient number, since it is larger than the sum of its proper divisors (11310715826997).

21030022021323 is a wasteful number, since it uses less digits than its factorization.

21030022021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282027.

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

Adding to 21030022021323 its reverse (32312022003012), we get a palindrome (53342044024335).

The spelling of 21030022021323 in words is "twenty-one trillion, thirty billion, twenty-two million, twenty-one thousand, three hundred twenty-three".