222442566 has 8 divisors (see below), whose sum is σ = 444885144. Its totient is φ = 74147520.

The previous prime is 222442559. The next prime is 222442601. The reversal of 222442566 is 665244222.

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

222442566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18536875 + ... + 18536886.

It is an arithmetic number, because the mean of its divisors is an integer number (55610643).

Almost surely, 2^222442566 is an apocalyptic number.

222442566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222442566 is a wasteful number, since it uses less digits than its factorization.

222442566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37073766.

The product of its digits is 46080, while the sum is 33.

The square root of 222442566 is about 14914.5085738686. The cubic root of 222442566 is about 605.9069937541.

Adding to 222442566 its reverse (665244222), we get a palindrome (887686788).

The spelling of 222442566 in words is "two hundred twenty-two million, four hundred forty-two thousand, five hundred sixty-six".