22133331 has 20 divisors (see below), whose sum is σ = 36070584. Its totient is φ = 13413600.

The previous prime is 22133329. The next prime is 22133341. The reversal of 22133331 is 13333122.

It is not a de Polignac number, because 22133331 - 2¹ = 22133329 is a prime.

It is a super-2 number, since 2×22133331² = 979768682311122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22133341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11530 + ... + 13311.

Almost surely, 2^22133331 is an apocalyptic number.

22133331 is a deficient number, since it is larger than the sum of its proper divisors (13937253).

22133331 is a wasteful number, since it uses less digits than its factorization.

22133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24864 (or 24855 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 22133331 is about 4704.6074225168. The cubic root of 22133331 is about 280.7688520129.

Adding to 22133331 its reverse (13333122), we get a palindrome (35466453).

The spelling of 22133331 in words is "twenty-two million, one hundred thirty-three thousand, three hundred thirty-one".