222203321 has 2 divisors, whose sum is σ = 222203322. Its totient is φ = 222203320.

The previous prime is 222203287. The next prime is 222203327. The reversal of 222203321 is 123302222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209207296 + 12996025 = 14464^2 + 3605^2 .

It is a cyclic number.

It is not a de Polignac number, because 222203321 - 2¹⁸ = 221941177 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222203321.

It is not a weakly prime, because it can be changed into another prime (222203327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111101660 + 111101661.

It is an arithmetic number, because the mean of its divisors is an integer number (111101661).

Almost surely, 2^222203321 is an apocalyptic number.

It is an amenable number.

222203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

222203321 is an equidigital number, since it uses as much as digits as its factorization.

222203321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 222203321 is about 14906.4858702512. The cubic root of 222203321 is about 605.6896908904.

Adding to 222203321 its reverse (123302222), we get a palindrome (345505543).

The spelling of 222203321 in words is "two hundred twenty-two million, two hundred three thousand, three hundred twenty-one".