22105173 has 16 divisors (see below), whose sum is σ = 29975616. Its totient is φ = 14488320.

The previous prime is 22105159. The next prime is 22105177. The reversal of 22105173 is 37150122.

It is not a de Polignac number, because 22105173 - 2⁸ = 22104917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22105177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66618 + ... + 66948.

It is an arithmetic number, because the mean of its divisors is an integer number (1873476).

Almost surely, 2^22105173 is an apocalyptic number.

It is an amenable number.

22105173 is a deficient number, since it is larger than the sum of its proper divisors (7870443).

22105173 is a wasteful number, since it uses less digits than its factorization.

22105173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 22105173 is about 4701.6138718529. The cubic root of 22105173 is about 280.6497368749.

Adding to 22105173 its reverse (37150122), we get a palindrome (59255295).

The spelling of 22105173 in words is "twenty-two million, one hundred five thousand, one hundred seventy-three".