222330221 has 4 divisors (see below), whose sum is σ = 222376512. Its totient is φ = 222283932.

The previous prime is 222330203. The next prime is 222330223. The reversal of 222330221 is 122033222.

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 222330221 - 2¹⁰ = 222329197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 222330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222330223) 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, 14981 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (55594128).

Almost surely, 2^222330221 is an apocalyptic number.

It is an amenable number.

222330221 is a deficient number, since it is larger than the sum of its proper divisors (46291).

222330221 is an equidigital number, since it uses as much as digits as its factorization.

222330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46290.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 222330221 is about 14910.7417991192. The cubic root of 222330221 is about 605.8049717874.

Adding to 222330221 its reverse (122033222), we get a palindrome (344363443).

The spelling of 222330221 in words is "two hundred twenty-two million, three hundred thirty thousand, two hundred twenty-one".