2100011011209 has 24 divisors (see below), whose sum is σ = 3115496521280. Its totient is φ = 1362097215648.

The previous prime is 2100011011193. The next prime is 2100011011223. The reversal of 2100011011209 is 9021101100012.

It is a happy number.

It is not a de Polignac number, because 2100011011209 - 2⁴ = 2100011011193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100011011191 and 2100011011200.

It is not an unprimeable number, because it can be changed into a prime (2100011011909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6538812 + ... + 6852450.

Almost surely, 2^{2100011011209} is an apocalyptic number.

It is an amenable number.

2100011011209 is a deficient number, since it is larger than the sum of its proper divisors (1015485510071).

2100011011209 is a wasteful number, since it uses less digits than its factorization.

2100011011209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333789 (or 333786 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 2100011011209 in words is "two trillion, one hundred billion, eleven million, eleven thousand, two hundred nine".