21023002223321 has 32 divisors (see below), whose sum is σ = 25937855424000. Its totient is φ = 16640336401920.

The previous prime is 21023002223309. The next prime is 21023002223339. The reversal of 21023002223321 is 12332220032012.

It is not a de Polignac number, because 21023002223321 - 2¹⁰ = 21023002222297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21023002226321) 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, 50915261 + ... + 51326501.

It is an arithmetic number, because the mean of its divisors is an integer number (810557982000).

Almost surely, 2^{21023002223321} is an apocalyptic number.

It is an amenable number.

21023002223321 is a deficient number, since it is larger than the sum of its proper divisors (4914853200679).

21023002223321 is a wasteful number, since it uses less digits than its factorization.

21023002223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422249.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21023002223321 its reverse (12332220032012), we get a palindrome (33355222255333).

The spelling of 21023002223321 in words is "twenty-one trillion, twenty-three billion, two million, two hundred twenty-three thousand, three hundred twenty-one".