304224121 has 2 divisors, whose sum is σ = 304224122. Its totient is φ = 304224120.

The previous prime is 304224113. The next prime is 304224149. The reversal of 304224121 is 121422403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258052096 + 46172025 = 16064^2 + 6795^2 .

It is a cyclic number.

It is not a de Polignac number, because 304224121 - 2³ = 304224113 is a prime.

It is not a weakly prime, because it can be changed into another prime (304224721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152112060 + 152112061.

It is an arithmetic number, because the mean of its divisors is an integer number (152112061).

Almost surely, 2^304224121 is an apocalyptic number.

It is an amenable number.

304224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

304224121 is an equidigital number, since it uses as much as digits as its factorization.

304224121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 304224121 is about 17442.0217004796. The cubic root of 304224121 is about 672.5602796489.

Adding to 304224121 its reverse (121422403), we get a palindrome (425646524).

It can be divided in two parts, 30422 and 4121, that added together give a palindrome (34543).

The spelling of 304224121 in words is "three hundred four million, two hundred twenty-four thousand, one hundred twenty-one".