304224244221 has 4 divisors (see below), whose sum is σ = 405632325632. Its totient is φ = 202816162812.

The previous prime is 304224244201. The next prime is 304224244223. The reversal of 304224244221 is 122442422403.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 304224244221 - 2²⁶ = 304157135357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304224244223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50704040701 + ... + 50704040706.

It is an arithmetic number, because the mean of its divisors is an integer number (101408081408).

Almost surely, 2^304224244221 is an apocalyptic number.

It is an amenable number.

304224244221 is a deficient number, since it is larger than the sum of its proper divisors (101408081411).

304224244221 is a wasteful number, since it uses less digits than its factorization.

304224244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101408081410.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 304224244221 its reverse (122442422403), we get a palindrome (426666666624).

The spelling of 304224244221 in words is "three hundred four billion, two hundred twenty-four million, two hundred forty-four thousand, two hundred twenty-one".