22171164 has 24 divisors (see below), whose sum is σ = 51813888. Its totient is φ = 7378800.

The previous prime is 22171159. The next prime is 22171183. The reversal of 22171164 is 46117122.

It is a super-2 number, since 2×22171164² = 983121026229792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10389 + ... + 12339.

It is an arithmetic number, because the mean of its divisors is an integer number (2158912).

Almost surely, 2^22171164 is an apocalyptic number.

It is an amenable number.

22171164 is an abundant number, since it is smaller than the sum of its proper divisors (29642724).

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

22171164 is a wasteful number, since it uses less digits than its factorization.

22171164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2903 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 22171164 is about 4708.6265513417. The cubic root of 22171164 is about 280.9287357856.

Adding to 22171164 its reverse (46117122), we get a palindrome (68288286).

The spelling of 22171164 in words is "twenty-two million, one hundred seventy-one thousand, one hundred sixty-four".