304323211221 has 8 divisors (see below), whose sum is σ = 409947418944. Its totient is φ = 200790572160.

The previous prime is 304323211217. The next prime is 304323211277. The reversal of 304323211221 is 122112323403.

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

It is not a de Polignac number, because 304323211221 - 2² = 304323211217 is a prime.

It is a super-2 number, since 2×304323211221² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 304323211191 and 304323211200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304323211721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522891825 + ... + 522892406.

It is an arithmetic number, because the mean of its divisors is an integer number (51243427368).

Almost surely, 2^304323211221 is an apocalyptic number.

It is an amenable number.

304323211221 is a deficient number, since it is larger than the sum of its proper divisors (105624207723).

304323211221 is a wasteful number, since it uses less digits than its factorization.

304323211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045784331.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 304323211221 its reverse (122112323403), we get a palindrome (426435534624).

The spelling of 304323211221 in words is "three hundred four billion, three hundred twenty-three million, two hundred eleven thousand, two hundred twenty-one".