22179 has 4 divisors (see below), whose sum is σ = 29576. Its totient is φ = 14784.

The previous prime is 22171. The next prime is 22189. The reversal of 22179 is 97122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22179 - 2³ = 22171 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3694 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (7394).

2²²¹⁷⁹ is an apocalyptic number.

22179 is a deficient number, since it is larger than the sum of its proper divisors (7397).

22179 is an equidigital number, since it uses as much as digits as its factorization.

22179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7396.

The product of its digits is 252, while the sum is 21.

The square root of 22179 is about 148.9261561983. The cubic root of 22179 is about 28.0961828294.

It can be divided in two parts, 221 and 79, that added together give a triangular number (300 = T₂₄).

The spelling of 22179 in words is "twenty-two thousand, one hundred seventy-nine".