130221200261 has 2 divisors, whose sum is σ = 130221200262. Its totient is φ = 130221200260.

The previous prime is 130221200173. The next prime is 130221200269. The reversal of 130221200261 is 162002122031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121448068036 + 8773132225 = 348494^2 + 93665^2 .

It is a cyclic number.

It is not a de Polignac number, because 130221200261 - 2³⁰ = 129147458437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130221200269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65110600130 + 65110600131.

It is an arithmetic number, because the mean of its divisors is an integer number (65110600131).

Almost surely, 2^130221200261 is an apocalyptic number.

It is an amenable number.

130221200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

130221200261 is an equidigital number, since it uses as much as digits as its factorization.

130221200261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 130221200261 its reverse (162002122031), we get a palindrome (292223322292).

The spelling of 130221200261 in words is "one hundred thirty billion, two hundred twenty-one million, two hundred thousand, two hundred sixty-one".