22681818223 has 4 divisors (see below), whose sum is σ = 23066255880. Its totient is φ = 22297380568.

The previous prime is 22681818193. The next prime is 22681818241. The reversal of 22681818223 is 32281818622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32281818622 = 2 ⋅16140909311.

It is a cyclic number.

It is not a de Polignac number, because 22681818223 - 2⁵ = 22681818191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22681818223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681818283) 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 3 ways as a sum of consecutive naturals, for example, 192218740 + ... + 192218857.

It is an arithmetic number, because the mean of its divisors is an integer number (5766563970).

Almost surely, 2^22681818223 is an apocalyptic number.

22681818223 is a deficient number, since it is larger than the sum of its proper divisors (384437657).

22681818223 is an equidigital number, since it uses as much as digits as its factorization.

22681818223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384437656.

The product of its digits is 147456, while the sum is 43.

The spelling of 22681818223 in words is "twenty-two billion, six hundred eighty-one million, eight hundred eighteen thousand, two hundred twenty-three".