222331042566 has 112 divisors (see below), whose sum is σ = 512288872656. Its totient is φ = 72295711488.

The previous prime is 222331042559. The next prime is 222331042573. The reversal of 222331042566 is 665240133222.

222331042566 is a `hidden beast` number, since 2 + 2 + 23 + 31 + 0 + 42 + 566 = 666.

It is an interprime number because it is at equal distance from previous prime (222331042559) and next prime (222331042573).

It is a self number, because there is not a number n which added to its sum of digits gives 222331042566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 64761186 + ... + 64764618.

Almost surely, 2^222331042566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222331042566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256144436328).

222331042566 is an abundant number, since it is smaller than the sum of its proper divisors (289957830090).

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

222331042566 is a wasteful number, since it uses less digits than its factorization.

222331042566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4529 (or 4514 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 222331042566 its reverse (665240133222), we get a palindrome (887571175788).

The spelling of 222331042566 in words is "two hundred twenty-two billion, three hundred thirty-one million, forty-two thousand, five hundred sixty-six".