222516423 has 8 divisors (see below), whose sum is σ = 329654000. Its totient is φ = 148344264.

The previous prime is 222516407. The next prime is 222516439. The reversal of 222516423 is 324615222.

It is a happy number.

222516423 is a `hidden beast` number, since 2 + 225 + 16 + 423 = 666.

222516423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222516407) and next prime (222516439).

It is not a de Polignac number, because 222516423 - 2⁴ = 222516407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8241349 = 222516423 / (2 + 2 + 2 + 5 + 1 + 6 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222516403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4120648 + ... + 4120701.

It is an arithmetic number, because the mean of its divisors is an integer number (41206750).

Almost surely, 2^222516423 is an apocalyptic number.

222516423 is a deficient number, since it is larger than the sum of its proper divisors (107137577).

222516423 is an equidigital number, since it uses as much as digits as its factorization.

222516423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8241358 (or 8241352 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 222516423 is about 14916.9843802291. The cubic root of 222516423 is about 605.9740455505.

The spelling of 222516423 in words is "two hundred twenty-two million, five hundred sixteen thousand, four hundred twenty-three".