23222755217 has 4 divisors (see below), whose sum is σ = 23305398756. Its totient is φ = 23140111680.

The previous prime is 23222755211. The next prime is 23222755273. The reversal of 23222755217 is 71255722232.

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 6196680961 + 17026074256 = 78719^2 + 130484^2 .

It is a cyclic number.

It is not a de Polignac number, because 23222755217 - 2²⁸ = 22954319761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23222755211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41321348 + ... + 41321909.

It is an arithmetic number, because the mean of its divisors is an integer number (5826349689).

Almost surely, 2^23222755217 is an apocalyptic number.

It is an amenable number.

23222755217 is a deficient number, since it is larger than the sum of its proper divisors (82643539).

23222755217 is an equidigital number, since it uses as much as digits as its factorization.

23222755217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82643538.

The product of its digits is 117600, while the sum is 38.

The spelling of 23222755217 in words is "twenty-three billion, two hundred twenty-two million, seven hundred fifty-five thousand, two hundred seventeen".