22171002 has 16 divisors (see below), whose sum is σ = 50676672. Its totient is φ = 6334560.

The previous prime is 22171001. The next prime is 22171003. The reversal of 22171002 is 20017122.

It is an interprime number because it is at equal distance from previous prime (22171001) and next prime (22171003).

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 7 ways as a sum of consecutive naturals, for example, 263899 + ... + 263982.

It is an arithmetic number, because the mean of its divisors is an integer number (3167292).

Almost surely, 2^22171002 is an apocalyptic number.

22171002 is an abundant number, since it is smaller than the sum of its proper divisors (28505670).

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

22171002 is a wasteful number, since it uses less digits than its factorization.

22171002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527893.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 22171002 is about 4708.6093488418. The cubic root of 22171002 is about 280.9280515551.

Adding to 22171002 its reverse (20017122), we get a palindrome (42188124).

The spelling of 22171002 in words is "twenty-two million, one hundred seventy-one thousand, two".