130021289 has 2 divisors, whose sum is σ = 130021290. Its totient is φ = 130021288.

The previous prime is 130021279. The next prime is 130021301. The reversal of 130021289 is 982120031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102353689 + 27667600 = 10117^2 + 5260^2 .

It is a cyclic number.

It is not a de Polignac number, because 130021289 - 2⁴ = 130021273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130021259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010644 + 65010645.

It is an arithmetic number, because the mean of its divisors is an integer number (65010645).

Almost surely, 2^130021289 is an apocalyptic number.

It is an amenable number.

130021289 is a deficient number, since it is larger than the sum of its proper divisors (1).

130021289 is an equidigital number, since it uses as much as digits as its factorization.

130021289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 130021289 is about 11402.6877971819. The cubic root of 130021289 is about 506.6073531579.

The spelling of 130021289 in words is "one hundred thirty million, twenty-one thousand, two hundred eighty-nine".