22171004 has 12 divisors (see below), whose sum is σ = 38874024. Its totient is φ = 11064144.

The previous prime is 22171003. The next prime is 22171027. The reversal of 22171004 is 40017122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22171001) 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 3 ways as a sum of consecutive naturals, for example, 2879 + ... + 7254.

It is an arithmetic number, because the mean of its divisors is an integer number (3239502).

Almost surely, 2^22171004 is an apocalyptic number.

It is an amenable number.

22171004 is a deficient number, since it is larger than the sum of its proper divisors (16703020).

22171004 is a wasteful number, since it uses less digits than its factorization.

22171004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10684 (or 10682 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22171004 is about 4708.6095612187. The cubic root of 22171004 is about 280.9280600024.

Adding to 22171004 its reverse (40017122), we get a palindrome (62188126).

The spelling of 22171004 in words is "twenty-two million, one hundred seventy-one thousand, four".