130207810721 has 2 divisors, whose sum is σ = 130207810722. Its totient is φ = 130207810720.

The previous prime is 130207810679. The next prime is 130207810751. The reversal of 130207810721 is 127018702031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73926891025 + 56280919696 = 271895^2 + 237236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130207810721 is a prime.

It is not a weakly prime, because it can be changed into another prime (130207810751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65103905360 + 65103905361.

It is an arithmetic number, because the mean of its divisors is an integer number (65103905361).

Almost surely, 2^130207810721 is an apocalyptic number.

It is an amenable number.

130207810721 is a deficient number, since it is larger than the sum of its proper divisors (1).

130207810721 is an equidigital number, since it uses as much as digits as its factorization.

130207810721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 130207810721 in words is "one hundred thirty billion, two hundred seven million, eight hundred ten thousand, seven hundred twenty-one".