222332561 has 16 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 199835520.

The previous prime is 222332557. The next prime is 222332563. The reversal of 222332561 is 165233222.

It is a cyclic number.

It is not a de Polignac number, because 222332561 - 2² = 222332557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222332561.

It is not an unprimeable number, because it can be changed into a prime (222332563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571355 + ... + 571743.

It is an arithmetic number, because the mean of its divisors is an integer number (15331680).

Almost surely, 2^222332561 is an apocalyptic number.

It is an amenable number.

222332561 is a deficient number, since it is larger than the sum of its proper divisors (22974319).

222332561 is a wasteful number, since it uses less digits than its factorization.

222332561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 4320, while the sum is 26.

The square root of 222332561 is about 14910.8202658338. The cubic root of 222332561 is about 605.8070971225.

Adding to 222332561 its reverse (165233222), we get a palindrome (387565783).

The spelling of 222332561 in words is "two hundred twenty-two million, three hundred thirty-two thousand, five hundred sixty-one".