22161108 has 48 divisors (see below), whose sum is σ = 53242560. Its totient is φ = 7171584.

The previous prime is 22161103. The next prime is 22161109. The reversal of 22161108 is 80116122.

It is a super-2 number, since 2×22161108² = 982229415575328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22161101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79866 + ... + 80142.

It is an arithmetic number, because the mean of its divisors is an integer number (1109220).

Almost surely, 2^22161108 is an apocalyptic number.

It is an amenable number.

22161108 is an abundant number, since it is smaller than the sum of its proper divisors (31081452).

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

22161108 is a wasteful number, since it uses less digits than its factorization.

22161108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 22161108 is about 4707.5586029278. The cubic root of 22161108 is about 280.8862564856.

The spelling of 22161108 in words is "twenty-two million, one hundred sixty-one thousand, one hundred eight".