2101209011 has 8 divisors (see below), whose sum is σ = 2292561264. Its totient is φ = 1909912320.

The previous prime is 2101208981. The next prime is 2101209017. The reversal of 2101209011 is 1109021012.

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-2101209011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101209017) 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, 130475 + ... + 145691.

It is an arithmetic number, because the mean of its divisors is an integer number (286570158).

Almost surely, 2^2101209011 is an apocalyptic number.

2101209011 is a deficient number, since it is larger than the sum of its proper divisors (191352253).

2101209011 is a wasteful number, since it uses less digits than its factorization.

2101209011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27781.

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

The square root of 2101209011 is about 45838.9464429539. The cubic root of 2101209011 is about 1280.8248693170.

It can be divided in two parts, 2101 and 209011, that added together give a palindrome (211112).

The spelling of 2101209011 in words is "two billion, one hundred one million, two hundred nine thousand, eleven".