22216233 has 24 divisors (see below), whose sum is σ = 33203520. Its totient is φ = 13191360.

The previous prime is 22216217. The next prime is 22216241. The reversal of 22216233 is 33261222.

It is not a de Polignac number, because 22216233 - 2⁴ = 22216217 is a prime.

It is a super-2 number, since 2×22216233² = 987122017420578, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22216283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13948 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^22216233 is an apocalyptic number.

It is an amenable number.

22216233 is a deficient number, since it is larger than the sum of its proper divisors (10987287).

22216233 is a wasteful number, since it uses less digits than its factorization.

22216233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569 (or 1556 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 22216233 is about 4713.4099121549. The cubic root of 22216233 is about 281.1189619695.

Adding to 22216233 its reverse (33261222), we get a palindrome (55477455).

The spelling of 22216233 in words is "twenty-two million, two hundred sixteen thousand, two hundred thirty-three".