22116623 has 4 divisors (see below), whose sum is σ = 22128288. Its totient is φ = 22104960.

The previous prime is 22116613. The next prime is 22116637. The reversal of 22116623 is 32661122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22116623 - 2⁴ = 22116607 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 (22116613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 7023.

It is an arithmetic number, because the mean of its divisors is an integer number (5532072).

Almost surely, 2^22116623 is an apocalyptic number.

22116623 is a deficient number, since it is larger than the sum of its proper divisors (11665).

22116623 is an equidigital number, since it uses as much as digits as its factorization.

22116623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664.

The product of its digits is 864, while the sum is 23.

The square root of 22116623 is about 4702.8313812001. The cubic root of 22116623 is about 280.6981853356.

Adding to 22116623 its reverse (32661122), we get a palindrome (54777745).

The spelling of 22116623 in words is "twenty-two million, one hundred sixteen thousand, six hundred twenty-three".