130021361 has 2 divisors, whose sum is σ = 130021362. Its totient is φ = 130021360.

The previous prime is 130021337. The next prime is 130021363. The reversal of 130021361 is 163120031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 516961 = 11380^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 130021361 - 2¹⁰ = 130020337 is a prime.

It is a Sophie Germain prime.

Together with 130021363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (130021363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010680 + 65010681.

It is an arithmetic number, because the mean of its divisors is an integer number (65010681).

Almost surely, 2^130021361 is an apocalyptic number.

It is an amenable number.

130021361 is a deficient number, since it is larger than the sum of its proper divisors (1).

130021361 is an equidigital number, since it uses as much as digits as its factorization.

130021361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 130021361 is about 11402.6909543318. The cubic root of 130021361 is about 506.6074466700.

Adding to 130021361 its reverse (163120031), we get a palindrome (293141392).

The spelling of 130021361 in words is "one hundred thirty million, twenty-one thousand, three hundred sixty-one".