22118512173 has 8 divisors (see below), whose sum is σ = 29493766848. Its totient is φ = 14744466144.

The previous prime is 22118512111. The next prime is 22118512177. The reversal of 22118512173 is 37121581122.

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

It is not a de Polignac number, because 22118512173 - 2⁶ = 22118512109 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118512177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258561 + ... + 333302.

It is an arithmetic number, because the mean of its divisors is an integer number (3686720856).

Almost surely, 2^22118512173 is an apocalyptic number.

It is an amenable number.

22118512173 is a deficient number, since it is larger than the sum of its proper divisors (7375254675).

22118512173 is a wasteful number, since it uses less digits than its factorization.

22118512173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604323.

The product of its digits is 6720, while the sum is 33.

The spelling of 22118512173 in words is "twenty-two billion, one hundred eighteen million, five hundred twelve thousand, one hundred seventy-three".