22217234 has 16 divisors (see below), whose sum is σ = 36133440. Its totient is φ = 10184400.

The previous prime is 22217233. The next prime is 22217263. The reversal of 22217234 is 43271222.

It is a happy number.

It is a super-2 number, since 2×22217234² = 987210973221512, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22217231) 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, 1097 + ... + 6755.

It is an arithmetic number, because the mean of its divisors is an integer number (2258340).

Almost surely, 2^22217234 is an apocalyptic number.

22217234 is a deficient number, since it is larger than the sum of its proper divisors (13916206).

22217234 is a wasteful number, since it uses less digits than its factorization.

22217234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5825.

The product of its digits is 1344, while the sum is 23.

The square root of 22217234 is about 4713.5160973524. The cubic root of 22217234 is about 281.1231840452.

Adding to 22217234 its reverse (43271222), we get a palindrome (65488456).

The spelling of 22217234 in words is "twenty-two million, two hundred seventeen thousand, two hundred thirty-four".