22121331311 has 6 divisors (see below), whose sum is σ = 23499130800. Its totient is φ = 20820076256.

The previous prime is 22121331301. The next prime is 22121331313. The reversal of 22121331311 is 11313312122.

It is a happy number.

It is not a de Polignac number, because 22121331311 - 2⁶ = 22121331247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121331313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38271911 + ... + 38272488.

It is an arithmetic number, because the mean of its divisors is an integer number (3916521800).

Almost surely, 2^22121331311 is an apocalyptic number.

22121331311 is a deficient number, since it is larger than the sum of its proper divisors (1377799489).

22121331311 is an equidigital number, since it uses as much as digits as its factorization.

22121331311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76544433 (or 76544416 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 22121331311 its reverse (11313312122), we get a palindrome (33434643433).

The spelling of 22121331311 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred eleven".