304052221021 has 2 divisors, whose sum is σ = 304052221022. Its totient is φ = 304052221020.

The previous prime is 304052221013. The next prime is 304052221061. The reversal of 304052221021 is 120122250403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268412067225 + 35640153796 = 518085^2 + 188786^2 .

It is a cyclic number.

It is not a de Polignac number, because 304052221021 - 2³ = 304052221013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304052220983 and 304052221001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304052221061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152026110510 + 152026110511.

It is an arithmetic number, because the mean of its divisors is an integer number (152026110511).

Almost surely, 2^304052221021 is an apocalyptic number.

It is an amenable number.

304052221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

304052221021 is an equidigital number, since it uses as much as digits as its factorization.

304052221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 304052221021 its reverse (120122250403), we get a palindrome (424174471424).

The spelling of 304052221021 in words is "three hundred four billion, fifty-two million, two hundred twenty-one thousand, twenty-one".