22223984857 has 4 divisors (see below), whose sum is σ = 22643305380. Its totient is φ = 21804664336.

The previous prime is 22223984813. The next prime is 22223984869. The reversal of 22223984857 is 75848932222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7615878361 + 14608106496 = 87269^2 + 120864^2 .

It is a cyclic number.

It is not a de Polignac number, because 22223984857 - 2¹⁵ = 22223952089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22223984897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209660182 + ... + 209660287.

It is an arithmetic number, because the mean of its divisors is an integer number (5660826345).

Almost surely, 2^22223984857 is an apocalyptic number.

It is an amenable number.

22223984857 is a deficient number, since it is larger than the sum of its proper divisors (419320523).

22223984857 is an equidigital number, since it uses as much as digits as its factorization.

22223984857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419320522.

The product of its digits is 3870720, while the sum is 52.

The spelling of 22223984857 in words is "twenty-two billion, two hundred twenty-three million, nine hundred eighty-four thousand, eight hundred fifty-seven".