2100112111 has 4 divisors (see below), whose sum is σ = 2172529800. Its totient is φ = 2027694424.

The previous prime is 2100112099. The next prime is 2100112117. The reversal of 2100112111 is 1112110012.

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 2100112111 - 2²⁵ = 2066557679 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 (2100112117) 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, 36208801 + ... + 36208858.

It is an arithmetic number, because the mean of its divisors is an integer number (543132450).

Almost surely, 2^2100112111 is an apocalyptic number.

2100112111 is a deficient number, since it is larger than the sum of its proper divisors (72417689).

2100112111 is an equidigital number, since it uses as much as digits as its factorization.

2100112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72417688.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 2100112111 is about 45826.9801645275. The cubic root of 2100112111 is about 1280.6019529964.

Adding to 2100112111 its reverse (1112110012), we get a palindrome (3212222123).

The spelling of 2100112111 in words is "two billion, one hundred million, one hundred twelve thousand, one hundred eleven".