22213131331 has 4 divisors (see below), whose sum is σ = 22754915064. Its totient is φ = 21671347600.

The previous prime is 22213131323. The next prime is 22213131361. The reversal of 22213131331 is 13313131222.

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 22213131331 - 2³ = 22213131323 is a prime.

It is a super-2 number, since 2×22213131331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22213131361) 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, 270891805 + ... + 270891886.

It is an arithmetic number, because the mean of its divisors is an integer number (5688728766).

Almost surely, 2^22213131331 is an apocalyptic number.

22213131331 is a deficient number, since it is larger than the sum of its proper divisors (541783733).

22213131331 is an equidigital number, since it uses as much as digits as its factorization.

22213131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541783732.

The product of its digits is 648, while the sum is 22.

Adding to 22213131331 its reverse (13313131222), we get a palindrome (35526262553).

The spelling of 22213131331 in words is "twenty-two billion, two hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-one".