11100100020209 has 2 divisors, whose sum is σ = 11100100020210. Its totient is φ = 11100100020208.

The previous prime is 11100100020179. The next prime is 11100100020263. The reversal of 11100100020209 is 90202000100111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8318032810000 + 2782067210209 = 2884100^2 + 1667953^2 .

It is a cyclic number.

It is not a de Polignac number, because 11100100020209 - 2²⁸ = 11099831584753 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 (11100100020409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550050010104 + 5550050010105.

It is an arithmetic number, because the mean of its divisors is an integer number (5550050010105).

Almost surely, 2^{11100100020209} is an apocalyptic number.

It is an amenable number.

11100100020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100100020209 is an equidigital number, since it uses as much as digits as its factorization.

11100100020209 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 17.

The spelling of 11100100020209 in words is "eleven trillion, one hundred billion, one hundred million, twenty thousand, two hundred nine".