2000111121209 has 4 divisors (see below), whose sum is σ = 2001845824116. Its totient is φ = 1998376418304.

The previous prime is 2000111121187. The next prime is 2000111121221. The reversal of 2000111121209 is 9021211110002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 692884765609 + 1307226355600 = 832397^2 + 1143340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000111121209 - 2¹⁶ = 2000111055673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000111121269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867349724 + ... + 867352029.

It is an arithmetic number, because the mean of its divisors is an integer number (500461456029).

Almost surely, 2^{2000111121209} is an apocalyptic number.

It is an amenable number.

2000111121209 is a deficient number, since it is larger than the sum of its proper divisors (1734702907).

2000111121209 is a wasteful number, since it uses less digits than its factorization.

2000111121209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734702906.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2000111121209 in words is "two trillion, one hundred eleven million, one hundred twenty-one thousand, two hundred nine".