12103111 has 6 divisors (see below), whose sum is σ = 12368360. Its totient is φ = 11843436.

The previous prime is 12103109. The next prime is 12103123. The reversal of 12103111 is 11130121.

12103111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12103111 - 2¹ = 12103109 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 (12103141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 531 + ... + 4948.

Almost surely, 2^12103111 is an apocalyptic number.

12103111 is a deficient number, since it is larger than the sum of its proper divisors (265249).

12103111 is an frugal number, since it uses more digits than its factorization.

12103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 12103111 is about 3478.9525722550. The cubic root of 12103111 is about 229.5967161023.

Adding to 12103111 its reverse (11130121), we get a palindrome (23233232).

The spelling of 12103111 in words is "twelve million, one hundred three thousand, one hundred eleven".