130972260721 has 2 divisors, whose sum is σ = 130972260722. Its totient is φ = 130972260720.

The previous prime is 130972260649. The next prime is 130972260733. The reversal of 130972260721 is 127062279031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127295536225 + 3676724496 = 356785^2 + 60636^2 .

It is an emirp because it is prime and its reverse (127062279031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130972260721 - 2¹³ = 130972252529 is a prime.

It is not a weakly prime, because it can be changed into another prime (130972269721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65486130360 + 65486130361.

It is an arithmetic number, because the mean of its divisors is an integer number (65486130361).

Almost surely, 2^130972260721 is an apocalyptic number.

It is an amenable number.

130972260721 is a deficient number, since it is larger than the sum of its proper divisors (1).

130972260721 is an equidigital number, since it uses as much as digits as its factorization.

130972260721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 130972260721 in words is "one hundred thirty billion, nine hundred seventy-two million, two hundred sixty thousand, seven hundred twenty-one".