2011100121209 has 8 divisors (see below), whose sum is σ = 2016985291200. Its totient is φ = 2005217590896.

The previous prime is 2011100121203. The next prime is 2011100121211. The reversal of 2011100121209 is 9021210011102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011100121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011100121203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871244 + ... + 2186610.

It is an arithmetic number, because the mean of its divisors is an integer number (252123161400).

Almost surely, 2^{2011100121209} is an apocalyptic number.

It is an amenable number.

2011100121209 is a deficient number, since it is larger than the sum of its proper divisors (5885169991).

2011100121209 is a wasteful number, since it uses less digits than its factorization.

2011100121209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319839.

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

The spelling of 2011100121209 in words is "two trillion, eleven billion, one hundred million, one hundred twenty-one thousand, two hundred nine".