222466561 has 4 divisors (see below), whose sum is σ = 222504624. Its totient is φ = 222428500.

The previous prime is 222466553. The next prime is 222466577. The reversal of 222466561 is 165664222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222466561 - 2³ = 222466553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222466061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8215 + ... + 22636.

It is an arithmetic number, because the mean of its divisors is an integer number (55626156).

Almost surely, 2^222466561 is an apocalyptic number.

It is an amenable number.

222466561 is a deficient number, since it is larger than the sum of its proper divisors (38063).

222466561 is an equidigital number, since it uses as much as digits as its factorization.

222466561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38062.

The product of its digits is 34560, while the sum is 34.

The square root of 222466561 is about 14915.3129702330. The cubic root of 222466561 is about 605.9287794759.

The spelling of 222466561 in words is "two hundred twenty-two million, four hundred sixty-six thousand, five hundred sixty-one".