304122221 has 8 divisors (see below), whose sum is σ = 327651744. Its totient is φ = 280612080.

The previous prime is 304122199. The next prime is 304122241. The reversal of 304122221 is 122221403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304122221 - 2⁶ = 304122157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304122241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58490 + ... + 63476.

It is an arithmetic number, because the mean of its divisors is an integer number (40956468).

Almost surely, 2^304122221 is an apocalyptic number.

It is an amenable number.

304122221 is a deficient number, since it is larger than the sum of its proper divisors (23529523).

304122221 is a wasteful number, since it uses less digits than its factorization.

304122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9691.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 304122221 is about 17439.1003495020. The cubic root of 304122221 is about 672.4851798119.

Adding to 304122221 its reverse (122221403), we get a palindrome (426343624).

The spelling of 304122221 in words is "three hundred four million, one hundred twenty-two thousand, two hundred twenty-one".