2120104111 has 4 divisors (see below), whose sum is σ = 2120225032. Its totient is φ = 2119983192.

The previous prime is 2120104081. The next prime is 2120104139. The reversal of 2120104111 is 1114010212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2120104111 - 2¹¹ = 2120102063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120104091 and 2120104100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120104141) 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, 28545 + ... + 71098.

It is an arithmetic number, because the mean of its divisors is an integer number (530056258).

Almost surely, 2^2120104111 is an apocalyptic number.

2120104111 is a deficient number, since it is larger than the sum of its proper divisors (120921).

2120104111 is an equidigital number, since it uses as much as digits as its factorization.

2120104111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120920.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2120104111 is about 46044.5882922195. The cubic root of 2120104111 is about 1284.6526863441.

Adding to 2120104111 its reverse (1114010212), we get a palindrome (3234114323).

The spelling of 2120104111 in words is "two billion, one hundred twenty million, one hundred four thousand, one hundred eleven".