13812111 has 12 divisors (see below), whose sum is σ = 20225088. Its totient is φ = 9081504.

The previous prime is 13812101. The next prime is 13812157. The reversal of 13812111 is 11121831.

It is a happy number.

13812111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13812111 - 2¹⁰ = 13811087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13812101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9855 + ... + 11168.

It is an arithmetic number, because the mean of its divisors is an integer number (1685424).

Almost surely, 2^13812111 is an apocalyptic number.

13812111 is a deficient number, since it is larger than the sum of its proper divisors (6412977).

13812111 is a wasteful number, since it uses less digits than its factorization.

13812111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21102 (or 21099 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 13812111 is about 3716.4648525178. The cubic root of 13812111 is about 239.9311781834.

Adding to 13812111 its reverse (11121831), we get a palindrome (24933942).

The spelling of 13812111 in words is "thirteen million, eight hundred twelve thousand, one hundred eleven".