10002000209 has 2 divisors, whose sum is σ = 10002000210. Its totient is φ = 10002000208.

The previous prime is 10002000191. The next prime is 10002000221. The reversal of 10002000209 is 90200020001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8992349584 + 1009650625 = 94828^2 + 31775^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002000209 - 2³² = 5707032913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10002000193 and 10002000202.

It is not a weakly prime, because it can be changed into another prime (10002000109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001000104 + 5001000105.

It is an arithmetic number, because the mean of its divisors is an integer number (5001000105).

Almost surely, 2^10002000209 is an apocalyptic number.

It is an amenable number.

10002000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002000209 is an equidigital number, since it uses as much as digits as its factorization.

10002000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The spelling of 10002000209 in words is "ten billion, two million, two hundred nine", and thus it is an aban number.