222246321 has 32 divisors (see below), whose sum is σ = 343460736. Its totient is φ = 126336000.

The previous prime is 222246307. The next prime is 222246337. The reversal of 222246321 is 123642222.

It is a happy number.

It is not a de Polignac number, because 222246321 - 2⁵ = 222246289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222246291 and 222246300.

It is not an unprimeable number, because it can be changed into a prime (222246301) 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 in 31 ways as a sum of consecutive naturals, for example, 235711 + ... + 236651.

It is an arithmetic number, because the mean of its divisors is an integer number (10733148).

Almost surely, 2^222246321 is an apocalyptic number.

It is an amenable number.

222246321 is a deficient number, since it is larger than the sum of its proper divisors (121214415).

222246321 is a wasteful number, since it uses less digits than its factorization.

222246321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393.

The product of its digits is 2304, while the sum is 24.

The square root of 222246321 is about 14907.9281256652. The cubic root of 222246321 is about 605.7287586786.

Adding to 222246321 its reverse (123642222), we get a palindrome (345888543).

The spelling of 222246321 in words is "two hundred twenty-two million, two hundred forty-six thousand, three hundred twenty-one".