422222217 has 8 divisors (see below), whose sum is σ = 596078496. Its totient is φ = 264923712.

The previous prime is 422222209. The next prime is 422222219. The reversal of 422222217 is 712222224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 422222217 - 2³ = 422222209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (422222219) 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 7 ways as a sum of consecutive naturals, for example, 4139383 + ... + 4139484.

It is an arithmetic number, because the mean of its divisors is an integer number (74509812).

Almost surely, 2^422222217 is an apocalyptic number.

It is an amenable number.

422222217 is a deficient number, since it is larger than the sum of its proper divisors (173856279).

422222217 is a wasteful number, since it uses less digits than its factorization.

422222217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278887.

The product of its digits is 1792, while the sum is 24.

The square root of 422222217 is about 20548.0465494898. The cubic root of 422222217 is about 750.2057017994.

The spelling of 422222217 in words is "four hundred twenty-two million, two hundred twenty-two thousand, two hundred seventeen".