2100200111 has 4 divisors (see below), whose sum is σ = 2223741312. Its totient is φ = 1976658912.

The previous prime is 2100200107. The next prime is 2100200153. The reversal of 2100200111 is 1110020012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100200111 - 2² = 2100200107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100200191) 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, 61770575 + ... + 61770608.

It is an arithmetic number, because the mean of its divisors is an integer number (555935328).

Almost surely, 2^2100200111 is an apocalyptic number.

2100200111 is a deficient number, since it is larger than the sum of its proper divisors (123541201).

2100200111 is a wasteful number, since it uses less digits than its factorization.

2100200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123541200.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2100200111 is about 45827.9402875582. The cubic root of 2100200111 is about 1280.6198395650.

Adding to 2100200111 its reverse (1110020012), we get a palindrome (3210220123).

It can be divided in two parts, 210020011 and 1, that added together give a palindrome (210020012).

The spelling of 2100200111 in words is "two billion, one hundred million, two hundred thousand, one hundred eleven".