130879901221 has 2 divisors, whose sum is σ = 130879901222. Its totient is φ = 130879901220.

The previous prime is 130879901147. The next prime is 130879901227. The reversal of 130879901221 is 122109978031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130599840996 + 280060225 = 361386^2 + 16735^2 .

It is a cyclic number.

It is not a de Polignac number, because 130879901221 - 2⁹ = 130879900709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130879901227) 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, 65439950610 + 65439950611.

It is an arithmetic number, because the mean of its divisors is an integer number (65439950611).

Almost surely, 2^130879901221 is an apocalyptic number.

It is an amenable number.

130879901221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130879901221 is an equidigital number, since it uses as much as digits as its factorization.

130879901221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 130879901221 in words is "one hundred thirty billion, eight hundred seventy-nine million, nine hundred one thousand, two hundred twenty-one".