22212108 has 36 divisors (see below), whose sum is σ = 56991480. Its totient is φ = 7292736.

The previous prime is 22212107. The next prime is 22212109. The reversal of 22212108 is 80121222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22212107) and next prime (22212109).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22212101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2193 + ... + 7016.

Almost surely, 2^22212108 is an apocalyptic number.

It is an amenable number.

22212108 is an abundant number, since it is smaller than the sum of its proper divisors (34779372).

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

22212108 is a wasteful number, since it uses less digits than its factorization.

22212108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286 (or 9281 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 22212108 is about 4712.9723105488. The cubic root of 22212108 is about 281.1015619675.

The spelling of 22212108 in words is "twenty-two million, two hundred twelve thousand, one hundred eight".