304440214221 has 48 divisors (see below), whose sum is σ = 516701045952. Its totient is φ = 170291404800.

The previous prime is 304440214213. The next prime is 304440214223. The reversal of 304440214221 is 122412044403.

304440214221 is a `hidden beast` number, since 3 + 0 + 4 + 440 + 214 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 304440214221 - 2³ = 304440214213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304440214223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12179266 + ... + 12204236.

It is an arithmetic number, because the mean of its divisors is an integer number (10764605124).

Almost surely, 2^304440214221 is an apocalyptic number.

It is an amenable number.

304440214221 is a deficient number, since it is larger than the sum of its proper divisors (212260831731).

304440214221 is a wasteful number, since it uses less digits than its factorization.

304440214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34474 (or 34471 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 304440214221 its reverse (122412044403), we get a palindrome (426852258624).

The spelling of 304440214221 in words is "three hundred four billion, four hundred forty million, two hundred fourteen thousand, two hundred twenty-one".