22102216 has 8 divisors (see below), whose sum is σ = 41441670. Its totient is φ = 11051104.

The previous prime is 22102211. The next prime is 22102217. The reversal of 22102216 is 61220122.

It can be written as a sum of positive squares in only one way, i.e., 16080100 + 6022116 = 4010^2 + 2454^2 .

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

It is a super-2 number, since 2×22102216² = 977015904221312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22102216.

It is not an unprimeable number, because it can be changed into a prime (22102211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1381381 + ... + 1381396.

Almost surely, 2^22102216 is an apocalyptic number.

It is an amenable number.

22102216 is a deficient number, since it is larger than the sum of its proper divisors (19339454).

22102216 is a wasteful number, since it uses less digits than its factorization.

22102216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762783 (or 2762779 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 22102216 is about 4701.2993948482. The cubic root of 22102216 is about 280.6372221832.

Adding to 22102216 its reverse (61220122), we get a palindrome (83322338).

The spelling of 22102216 in words is "twenty-two million, one hundred two thousand, two hundred sixteen".