304030011221 has 4 divisors (see below), whose sum is σ = 310498734912. Its totient is φ = 297561287532.

The previous prime is 304030011193. The next prime is 304030011223. The reversal of 304030011221 is 122110030403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122110030403 = 12713 ⋅9605131.

It is a cyclic number.

It is not a de Polignac number, because 304030011221 - 2³⁴ = 286850142037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 304030011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304030011223) 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, 3234361775 + ... + 3234361868.

It is an arithmetic number, because the mean of its divisors is an integer number (77624683728).

Almost surely, 2^304030011221 is an apocalyptic number.

It is an amenable number.

304030011221 is a deficient number, since it is larger than the sum of its proper divisors (6468723691).

304030011221 is an equidigital number, since it uses as much as digits as its factorization.

304030011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468723690.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 304030011221 its reverse (122110030403), we get a palindrome (426140041624).

The spelling of 304030011221 in words is "three hundred four billion, thirty million, eleven thousand, two hundred twenty-one".