130300021 has 2 divisors, whose sum is σ = 130300022. Its totient is φ = 130300020.

The previous prime is 130299989. The next prime is 130300031. The reversal of 130300021 is 120003031.

It is an a-pointer prime, because the next prime (130300031) can be obtained adding 130300021 to its sum of digits (10).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83923921 + 46376100 = 9161^2 + 6810^2 .

It is a cyclic number.

It is not a de Polignac number, because 130300021 - 2⁵ = 130299989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130299980 and 130300007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130300031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65150010 + 65150011.

It is an arithmetic number, because the mean of its divisors is an integer number (65150011).

Almost surely, 2^130300021 is an apocalyptic number.

It is an amenable number.

130300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130300021 is an equidigital number, since it uses as much as digits as its factorization.

130300021 is an evil number, because the sum of its binary digits is even.

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

The square root of 130300021 is about 11414.9034599509. The cubic root of 130300021 is about 506.9691064718.

Adding to 130300021 its reverse (120003031), we get a palindrome (250303052).

The spelling of 130300021 in words is "one hundred thirty million, three hundred thousand, twenty-one".