130103021 has 2 divisors, whose sum is σ = 130103022. Its totient is φ = 130103020.

The previous prime is 130103011. The next prime is 130103047. The reversal of 130103021 is 120301031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91489225 + 38613796 = 9565^2 + 6214^2 .

It is a cyclic number.

It is not a de Polignac number, because 130103021 - 2⁶ = 130102957 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 130102993 and 130103011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130103011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65051510 + 65051511.

It is an arithmetic number, because the mean of its divisors is an integer number (65051511).

Almost surely, 2^130103021 is an apocalyptic number.

It is an amenable number.

130103021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130103021 is an equidigital number, since it uses as much as digits as its factorization.

130103021 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 11.

The square root of 130103021 is about 11406.2711260078. The cubic root of 130103021 is about 506.7134828528.

Adding to 130103021 its reverse (120301031), we get a palindrome (250404052).

The spelling of 130103021 in words is "one hundred thirty million, one hundred three thousand, twenty-one".