304132200221 has 4 divisors (see below), whose sum is σ = 314619517500. Its totient is φ = 293644882944.

The previous prime is 304132200173. The next prime is 304132200277. The reversal of 304132200221 is 122002231403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122002231403 = 13 ⋅9384787031.

It can be written as a sum of positive squares in 2 ways, for example, as 157489922500 + 146642277721 = 396850^2 + 382939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304132200221 is a prime.

It is a super-2 number, since 2×304132200221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304132200193 and 304132200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304132250221) 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, 5243658596 + ... + 5243658653.

It is an arithmetic number, because the mean of its divisors is an integer number (78654879375).

Almost surely, 2^304132200221 is an apocalyptic number.

It is an amenable number.

304132200221 is a deficient number, since it is larger than the sum of its proper divisors (10487317279).

304132200221 is a wasteful number, since it uses less digits than its factorization.

304132200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487317278.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 304132200221 its reverse (122002231403), we get a palindrome (426134431624).

The spelling of 304132200221 in words is "three hundred four billion, one hundred thirty-two million, two hundred thousand, two hundred twenty-one".