130020331261 has 2 divisors, whose sum is σ = 130020331262. Its totient is φ = 130020331260.

The previous prime is 130020331249. The next prime is 130020331283. The reversal of 130020331261 is 162133020031.

It is an a-pointer prime, because the next prime (130020331283) can be obtained adding 130020331261 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102124984900 + 27895346361 = 319570^2 + 167019^2 .

It is a cyclic number.

It is not a de Polignac number, because 130020331261 - 2¹⁵ = 130020298493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130020331291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010165630 + 65010165631.

It is an arithmetic number, because the mean of its divisors is an integer number (65010165631).

Almost surely, 2^130020331261 is an apocalyptic number.

It is an amenable number.

130020331261 is a deficient number, since it is larger than the sum of its proper divisors (1).

130020331261 is an equidigital number, since it uses as much as digits as its factorization.

130020331261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 130020331261 its reverse (162133020031), we get a palindrome (292153351292).

The spelling of 130020331261 in words is "one hundred thirty billion, twenty million, three hundred thirty-one thousand, two hundred sixty-one".