222204321 has 6 divisors (see below), whose sum is σ = 320961810. Its totient is φ = 148136208.

The previous prime is 222204319. The next prime is 222204341. The reversal of 222204321 is 123402222.

222204321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 111197025 + 111007296 = 10545^2 + 10536^2 .

It is not a de Polignac number, because 222204321 - 2¹ = 222204319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222204294 and 222204303.

It is not an unprimeable number, because it can be changed into a prime (222204341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12344676 + ... + 12344693.

It is an arithmetic number, because the mean of its divisors is an integer number (53493635).

Almost surely, 2^222204321 is an apocalyptic number.

It is an amenable number.

222204321 is a deficient number, since it is larger than the sum of its proper divisors (98757489).

222204321 is a wasteful number, since it uses less digits than its factorization.

222204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24689375 (or 24689372 counting only the distinct ones).

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

The square root of 222204321 is about 14906.5194126597. The cubic root of 222204321 is about 605.6905995009.

Adding to 222204321 its reverse (123402222), we get a palindrome (345606543).

The spelling of 222204321 in words is "two hundred twenty-two million, two hundred four thousand, three hundred twenty-one".