10002111209 has 2 divisors, whose sum is σ = 10002111210. Its totient is φ = 10002111208.

The previous prime is 10002111193. The next prime is 10002111221. The reversal of 10002111209 is 90211120001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10000000000 + 2111209 = 100000^2 + 1453^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002111209 - 2⁴ = 10002111193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10002111289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001055604 + 5001055605.

It is an arithmetic number, because the mean of its divisors is an integer number (5001055605).

Almost surely, 2^10002111209 is an apocalyptic number.

It is an amenable number.

10002111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002111209 is an equidigital number, since it uses as much as digits as its factorization.

10002111209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 10002111209 in words is "ten billion, two million, one hundred eleven thousand, two hundred nine".