21012022133323 has 16 divisors (see below), whose sum is σ = 23159698845696. Its totient is φ = 18942037662240.

The previous prime is 21012022133257. The next prime is 21012022133329. The reversal of 21012022133323 is 32333122021012.

It is not a de Polignac number, because 21012022133323 - 2²⁵ = 21011988578891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012022133329) 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, 36854863 + ... + 37420648.

It is an arithmetic number, because the mean of its divisors is an integer number (1447481177856).

Almost surely, 2^{21012022133323} is an apocalyptic number.

21012022133323 is a deficient number, since it is larger than the sum of its proper divisors (2147676712373).

21012022133323 is a wasteful number, since it uses less digits than its factorization.

21012022133323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74276034.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21012022133323 its reverse (32333122021012), we get a palindrome (53345144154335).

The spelling of 21012022133323 in words is "twenty-one trillion, twelve billion, twenty-two million, one hundred thirty-three thousand, three hundred twenty-three".