22100216 has 8 divisors (see below), whose sum is σ = 41437920. Its totient is φ = 11050104.

The previous prime is 22100207. The next prime is 22100219. The reversal of 22100216 is 61200122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22100216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1381256 + ... + 1381271.

It is an arithmetic number, because the mean of its divisors is an integer number (5179740).

Almost surely, 2^22100216 is an apocalyptic number.

It is an amenable number.

22100216 is a deficient number, since it is larger than the sum of its proper divisors (19337704).

22100216 is a wasteful number, since it uses less digits than its factorization.

22100216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762533 (or 2762529 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 22100216 is about 4701.0866828851. The cubic root of 22100216 is about 280.6287570987.

Adding to 22100216 its reverse (61200122), we get a palindrome (83300338).

The spelling of 22100216 in words is "twenty-two million, one hundred thousand, two hundred sixteen".