22138171 has 8 divisors (see below), whose sum is σ = 24300864. Its totient is φ = 20000520.

The previous prime is 22138159. The next prime is 22138187. The reversal of 22138171 is 17183122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22138171 - 2⁵ = 22138139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22138141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4381 + ... + 7966.

It is an arithmetic number, because the mean of its divisors is an integer number (3037608).

Almost surely, 2^22138171 is an apocalyptic number.

22138171 is a deficient number, since it is larger than the sum of its proper divisors (2162693).

22138171 is a wasteful number, since it uses less digits than its factorization.

22138171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12521.

The product of its digits is 672, while the sum is 25.

The square root of 22138171 is about 4705.1217837586. The cubic root of 22138171 is about 280.7893162048.

The spelling of 22138171 in words is "twenty-two million, one hundred thirty-eight thousand, one hundred seventy-one".