130298821 has 2 divisors, whose sum is σ = 130298822. Its totient is φ = 130298820.

The previous prime is 130298807. The next prime is 130298837. The reversal of 130298821 is 128892031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68062500 + 62236321 = 8250^2 + 7889^2 .

It is an emirp because it is prime and its reverse (128892031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130298821 - 2¹⁷ = 130167749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130298851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65149410 + 65149411.

It is an arithmetic number, because the mean of its divisors is an integer number (65149411).

Almost surely, 2^130298821 is an apocalyptic number.

It is an amenable number.

130298821 is a deficient number, since it is larger than the sum of its proper divisors (1).

130298821 is an equidigital number, since it uses as much as digits as its factorization.

130298821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 130298821 is about 11414.8508969675. The cubic root of 130298821 is about 506.9675501538.

The spelling of 130298821 in words is "one hundred thirty million, two hundred ninety-eight thousand, eight hundred twenty-one".