22156233 has 8 divisors (see below), whose sum is σ = 32227296. Its totient is φ = 13428000.

The previous prime is 22156231. The next prime is 22156241. The reversal of 22156233 is 33265122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22156233 - 2¹ = 22156231 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22156231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335668 + ... + 335733.

It is an arithmetic number, because the mean of its divisors is an integer number (4028412).

Almost surely, 2^22156233 is an apocalyptic number.

It is an amenable number.

22156233 is a deficient number, since it is larger than the sum of its proper divisors (10071063).

22156233 is a wasteful number, since it uses less digits than its factorization.

22156233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671415.

The product of its digits is 2160, while the sum is 24.

The square root of 22156233 is about 4707.0407901356. The cubic root of 22156233 is about 280.8656585245.

Subtracting 22156233 from its reverse (33265122), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2215 and 6233, that added together give a palindrome (8448).

The spelling of 22156233 in words is "twenty-two million, one hundred fifty-six thousand, two hundred thirty-three".