22122108 has 18 divisors (see below), whose sum is σ = 55919864. Its totient is φ = 7374024.

The previous prime is 22122103. The next prime is 22122169. The reversal of 22122108 is 80122122.

It is a happy number.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307216 + ... + 307287.

Almost surely, 2^22122108 is an apocalyptic number.

It is an amenable number.

22122108 is an abundant number, since it is smaller than the sum of its proper divisors (33797756).

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

22122108 is a wasteful number, since it uses less digits than its factorization.

22122108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614513 (or 614508 counting only the distinct ones).

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

The square root of 22122108 is about 4703.4145043787. The cubic root of 22122108 is about 280.7213881288.

The spelling of 22122108 in words is "twenty-two million, one hundred twenty-two thousand, one hundred eight".