222312204 has 36 divisors (see below), whose sum is σ = 586390896. Its totient is φ = 70881888.

The previous prime is 222312199. The next prime is 222312221. The reversal of 222312204 is 402213222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 133419 + ... + 135074.

It is an arithmetic number, because the mean of its divisors is an integer number (16288636).

Almost surely, 2^222312204 is an apocalyptic number.

It is an amenable number.

222312204 is an abundant number, since it is smaller than the sum of its proper divisors (364078692).

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

222312204 is a wasteful number, since it uses less digits than its factorization.

222312204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268526 (or 268521 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222312204 is about 14910.1376251194. The cubic root of 222312204 is about 605.7886071160.

Adding to 222312204 its reverse (402213222), we get a palindrome (624525426).

The spelling of 222312204 in words is "two hundred twenty-two million, three hundred twelve thousand, two hundred four".