22016216 has 16 divisors (see below), whose sum is σ = 41847000. Its totient is φ = 10857024.

The previous prime is 22016209. The next prime is 22016219. The reversal of 22016216 is 61261022.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22016219) 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, 18266 + ... + 19433.

Almost surely, 2^22016216 is an apocalyptic number.

It is an amenable number.

22016216 is a deficient number, since it is larger than the sum of its proper divisors (19830784).

22016216 is a wasteful number, since it uses less digits than its factorization.

22016216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37778 (or 37774 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22016216 is about 4692.1440728094. The cubic root of 22016216 is about 280.2727614146.

Adding to 22016216 its reverse (61261022), we get a palindrome (83277238).

The spelling of 22016216 in words is "twenty-two million, sixteen thousand, two hundred sixteen".