130310021081 has 2 divisors, whose sum is σ = 130310021082. Its totient is φ = 130310021080.

The previous prime is 130310021003. The next prime is 130310021167. The reversal of 130310021081 is 180120013031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124285156681 + 6024864400 = 352541^2 + 77620^2 .

It is a cyclic number.

It is not a de Polignac number, because 130310021081 - 2³⁰ = 129236279257 is a prime.

It is a super-2 number, since 2×130310021081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130310021381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65155010540 + 65155010541.

It is an arithmetic number, because the mean of its divisors is an integer number (65155010541).

Almost surely, 2^130310021081 is an apocalyptic number.

It is an amenable number.

130310021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

130310021081 is an equidigital number, since it uses as much as digits as its factorization.

130310021081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 130310021081 in words is "one hundred thirty billion, three hundred ten million, twenty-one thousand, eighty-one".