22181108 has 24 divisors (see below), whose sum is σ = 40678848. Its totient is φ = 10562816.

The previous prime is 22181069. The next prime is 22181147. The reversal of 22181108 is 80118122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22181069) and next prime (22181147).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32135 + ... + 32817.

It is an arithmetic number, because the mean of its divisors is an integer number (1694952).

Almost surely, 2^22181108 is an apocalyptic number.

It is an amenable number.

22181108 is a deficient number, since it is larger than the sum of its proper divisors (18497740).

22181108 is a wasteful number, since it uses less digits than its factorization.

22181108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 22181108 is about 4709.6823672091. The cubic root of 22181108 is about 280.9707293380.

The spelling of 22181108 in words is "twenty-two million, one hundred eighty-one thousand, one hundred eight".