2111109 has 64 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 933120.

The previous prime is 2111107. The next prime is 2111129. The reversal of 2111109 is 9011112.

It is not a de Polignac number, because 2111109 - 2¹ = 2111107 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57039 + ... + 57075.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2^2111109 is an apocalyptic number.

2111109 is the 777-th nonagonal number.

It is an amenable number.

2111109 is a deficient number, since it is larger than the sum of its proper divisors (1974651).

2111109 is a wasteful number, since it uses less digits than its factorization.

2111109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 2111109 is about 1452.9655880302. The cubic root of 2111109 is about 128.2833282814.

It can be divided in two parts, 21 and 11109, that multiplied together give a square (233289 = 483²).

The spelling of 2111109 in words is "two million, one hundred eleven thousand, one hundred nine".