22418212 has 12 divisors (see below), whose sum is σ = 39599280. Its totient is φ = 11104136.

The previous prime is 22418203. The next prime is 22418213. The reversal of 22418212 is 21281422.

It is not an unprimeable number, because it can be changed into a prime (22418213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25762 + ... + 26617.

It is an arithmetic number, because the mean of its divisors is an integer number (3299940).

Almost surely, 2^22418212 is an apocalyptic number.

It is an amenable number.

22418212 is a deficient number, since it is larger than the sum of its proper divisors (17181068).

22418212 is a wasteful number, since it uses less digits than its factorization.

22418212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52490 (or 52488 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

The square root of 22418212 is about 4734.7874292306. The cubic root of 22418212 is about 281.9683246618.

Adding to 22418212 its reverse (21281422), we get a palindrome (43699634).

The spelling of 22418212 in words is "twenty-two million, four hundred eighteen thousand, two hundred twelve".