22312233 has 8 divisors (see below), whose sum is σ = 33055200. Its totient is φ = 14874804.

The previous prime is 22312229. The next prime is 22312259. The reversal of 22312233 is 33221322.

It is a happy number.

It is not a de Polignac number, because 22312233 - 2² = 22312229 is a prime.

It is a super-3 number, since 3×22312233³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22312333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413163 + ... + 413216.

It is an arithmetic number, because the mean of its divisors is an integer number (4131900).

Almost surely, 2^22312233 is an apocalyptic number.

It is an amenable number.

22312233 is a deficient number, since it is larger than the sum of its proper divisors (10742967).

22312233 is an equidigital number, since it uses as much as digits as its factorization.

22312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826388 (or 826382 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 22312233 is about 4723.5826445612. The cubic root of 22312233 is about 281.5233005604.

Adding to 22312233 its reverse (33221322), we get a palindrome (55533555).

The spelling of 22312233 in words is "twenty-two million, three hundred twelve thousand, two hundred thirty-three".