130103032721 has 2 divisors, whose sum is σ = 130103032722. Its totient is φ = 130103032720.

The previous prime is 130103032711. The next prime is 130103032747. The reversal of 130103032721 is 127230301031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83585170321 + 46517862400 = 289111^2 + 215680^2 .

It is a cyclic number.

It is not a de Polignac number, because 130103032721 - 2³⁴ = 112923163537 is a prime.

It is not a weakly prime, because it can be changed into another prime (130103032711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65051516360 + 65051516361.

It is an arithmetic number, because the mean of its divisors is an integer number (65051516361).

Almost surely, 2^130103032721 is an apocalyptic number.

It is an amenable number.

130103032721 is a deficient number, since it is larger than the sum of its proper divisors (1).

130103032721 is an equidigital number, since it uses as much as digits as its factorization.

130103032721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

Adding to 130103032721 its reverse (127230301031), we get a palindrome (257333333752).

The spelling of 130103032721 in words is "one hundred thirty billion, one hundred three million, thirty-two thousand, seven hundred twenty-one".