22212396 has 18 divisors (see below), whose sum is σ = 56148092. Its totient is φ = 7404120.

The previous prime is 22212391. The next prime is 22212397. The reversal of 22212396 is 69321222.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22212391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308470 + ... + 308541.

Almost surely, 2^22212396 is an apocalyptic number.

It is an amenable number.

22212396 is an abundant number, since it is smaller than the sum of its proper divisors (33935696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22212396 is a wasteful number, since it uses less digits than its factorization.

22212396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617021 (or 617016 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22212396 is about 4713.0028644167. The cubic root of 22212396 is about 281.1027768740.

Subtracting from 22212396 its sum of digits (27), we obtain a square (22212369 = 4713²).

The spelling of 22212396 in words is "twenty-two million, two hundred twelve thousand, three hundred ninety-six".