2102111 has 16 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 1809600.

The previous prime is 2102099. The next prime is 2102117. The reversal of 2102111 is 1112012.

It is a cyclic number.

It is not a de Polignac number, because 2102111 - 2¹⁸ = 1839967 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 (2102117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26570 + ... + 26648.

It is an arithmetic number, because the mean of its divisors is an integer number (151200).

2^2102111 is an apocalyptic number.

2102111 is a deficient number, since it is larger than the sum of its proper divisors (317089).

2102111 is a wasteful number, since it uses less digits than its factorization.

2102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

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

The square root of 2102111 is about 1449.8658558639. The cubic root of 2102111 is about 128.1008116940.

Adding to 2102111 its reverse (1112012), we get a palindrome (3214123).

Subtracting from 2102111 its reverse (1112012), we obtain a palindrome (990099).

The spelling of 2102111 in words is "two million, one hundred two thousand, one hundred eleven".