101330209 has 2 divisors, whose sum is σ = 101330210. Its totient is φ = 101330208.

The previous prime is 101330191. The next prime is 101330233. The reversal of 101330209 is 902033101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68840209 + 32490000 = 8297^2 + 5700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101330209 is a prime.

It is a super-2 number, since 2×101330209² = 20535622511967362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101330279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50665104 + 50665105.

It is an arithmetic number, because the mean of its divisors is an integer number (50665105).

Almost surely, 2^101330209 is an apocalyptic number.

It is an amenable number.

101330209 is a deficient number, since it is larger than the sum of its proper divisors (1).

101330209 is an equidigital number, since it uses as much as digits as its factorization.

101330209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 101330209 is about 10066.2907269759. The cubic root of 101330209 is about 466.2079189692.

The spelling of 101330209 in words is "one hundred one million, three hundred thirty thousand, two hundred nine".