2102110111 has 4 divisors (see below), whose sum is σ = 2103906424. Its totient is φ = 2100313800.

The previous prime is 2102110099. The next prime is 2102110121. The reversal of 2102110111 is 1110112012.

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 2102110111 - 2⁷ = 2102109983 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 (2102110121) 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, 896400 + ... + 898741.

It is an arithmetic number, because the mean of its divisors is an integer number (525976606).

Almost surely, 2^2102110111 is an apocalyptic number.

2102110111 is a deficient number, since it is larger than the sum of its proper divisors (1796313).

2102110111 is a wasteful number, since it uses less digits than its factorization.

2102110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796312.

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

The square root of 2102110111 is about 45848.7743674790. The cubic root of 2102110111 is about 1281.0079363572.

Adding to 2102110111 its reverse (1110112012), we get a palindrome (3212222123).

The spelling of 2102110111 in words is "two billion, one hundred two million, one hundred ten thousand, one hundred eleven".