22117145 has 8 divisors (see below), whose sum is σ = 27694656. Its totient is φ = 16924336.

The previous prime is 22117103. The next prime is 22117171. The reversal of 22117145 is 54171122.

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 22117145 - 2⁸ = 22116889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22117145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96047 + ... + 96276.

It is an arithmetic number, because the mean of its divisors is an integer number (3461832).

Almost surely, 2^22117145 is an apocalyptic number.

It is an amenable number.

22117145 is a deficient number, since it is larger than the sum of its proper divisors (5577511).

22117145 is a wasteful number, since it uses less digits than its factorization.

22117145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192351.

The product of its digits is 560, while the sum is 23.

The square root of 22117145 is about 4702.8868793540. The cubic root of 22117145 is about 280.7003936791.

Adding to 22117145 its reverse (54171122), we get a palindrome (76288267).

The spelling of 22117145 in words is "twenty-two million, one hundred seventeen thousand, one hundred forty-five".