300130021 has 2 divisors, whose sum is σ = 300130022. Its totient is φ = 300130020.

The previous prime is 300130001. The next prime is 300130057. The reversal of 300130021 is 120031003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298944100 + 1185921 = 17290^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 300130021 - 2⁵ = 300129989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300130001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150065010 + 150065011.

It is an arithmetic number, because the mean of its divisors is an integer number (150065011).

Almost surely, 2^300130021 is an apocalyptic number.

It is an amenable number.

300130021 is a deficient number, since it is larger than the sum of its proper divisors (1).

300130021 is an equidigital number, since it uses as much as digits as its factorization.

300130021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 300130021 is about 17324.2610520622. The cubic root of 300130021 is about 669.5296476045.

Adding to 300130021 its reverse (120031003), we get a palindrome (420161024).

It can be divided in two parts, 300 and 130021, that added together give a 4-th power (130321 = 19⁴).

The spelling of 300130021 in words is "three hundred million, one hundred thirty thousand, twenty-one".