222305605 has 24 divisors (see below), whose sum is σ = 285292800. Its totient is φ = 166244832.

The previous prime is 222305593. The next prime is 222305627. The reversal of 222305605 is 506503222.

It is not a de Polignac number, because 222305605 - 2⁷ = 222305477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222305605.

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 23 ways as a sum of consecutive naturals, for example, 141816 + ... + 143374.

It is an arithmetic number, because the mean of its divisors is an integer number (11887200).

Almost surely, 2^222305605 is an apocalyptic number.

It is an amenable number.

222305605 is a deficient number, since it is larger than the sum of its proper divisors (62987195).

222305605 is a wasteful number, since it uses less digits than its factorization.

222305605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 222305605 is about 14909.9163310865. The cubic root of 222305605 is about 605.7826130852.

Adding to 222305605 its reverse (506503222), we get a palindrome (728808827).

The spelling of 222305605 in words is "two hundred twenty-two million, three hundred five thousand, six hundred five".