130211209 has 2 divisors, whose sum is σ = 130211210. Its totient is φ = 130211208.

The previous prime is 130211173. The next prime is 130211227. The reversal of 130211209 is 902112031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116035984 + 14175225 = 10772^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 130211209 - 2⁹ = 130210697 is a prime.

It is not a weakly prime, because it can be changed into another prime (130211269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65105604 + 65105605.

It is an arithmetic number, because the mean of its divisors is an integer number (65105605).

Almost surely, 2^130211209 is an apocalyptic number.

It is an amenable number.

130211209 is a deficient number, since it is larger than the sum of its proper divisors (1).

130211209 is an equidigital number, since it uses as much as digits as its factorization.

130211209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 130211209 is about 11411.0126193954. The cubic root of 130211209 is about 506.8538975526.

The spelling of 130211209 in words is "one hundred thirty million, two hundred eleven thousand, two hundred nine".