21331210022323 has 4 divisors (see below), whose sum is σ = 22066768988640. Its totient is φ = 20595651056008.

The previous prime is 21331210022293. The next prime is 21331210022333. The reversal of 21331210022323 is 32322001213312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21331210022323 - 2²¹ = 21331207925171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21331210022333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367779483115 + ... + 367779483172.

It is an arithmetic number, because the mean of its divisors is an integer number (5516692247160).

Almost surely, 2^{21331210022323} is an apocalyptic number.

21331210022323 is a deficient number, since it is larger than the sum of its proper divisors (735558966317).

21331210022323 is an equidigital number, since it uses as much as digits as its factorization.

21331210022323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735558966316.

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

Adding to 21331210022323 its reverse (32322001213312), we get a palindrome (53653211235635).

The spelling of 21331210022323 in words is "twenty-one trillion, three hundred thirty-one billion, two hundred ten million, twenty-two thousand, three hundred twenty-three".