22118173 has 32 divisors (see below), whose sum is σ = 29783808. Its totient is φ = 15897600.

The previous prime is 22118167. The next prime is 22118179. The reversal of 22118173 is 37181122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22118167) and next prime (22118179).

It is a cyclic number.

It is not a de Polignac number, because 22118173 - 2¹³ = 22109981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79711 + ... + 79987.

It is an arithmetic number, because the mean of its divisors is an integer number (930744).

Almost surely, 2^22118173 is an apocalyptic number.

It is an amenable number.

22118173 is a deficient number, since it is larger than the sum of its proper divisors (7665635).

22118173 is a wasteful number, since it uses less digits than its factorization.

22118173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373.

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

The square root of 22118173 is about 4702.9961726542. The cubic root of 22118173 is about 280.7047425758.

Adding to 22118173 its reverse (37181122), we get a palindrome (59299295).

The spelling of 22118173 in words is "twenty-two million, one hundred eighteen thousand, one hundred seventy-three".