12011103 has 24 divisors (see below), whose sum is σ = 18804240. Its totient is φ = 7344000.

The previous prime is 12011099. The next prime is 12011113. The reversal of 12011103 is 30111021.

It is not a de Polignac number, because 12011103 - 2² = 12011099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29163 + ... + 29571.

It is an arithmetic number, because the mean of its divisors is an integer number (783510).

Almost surely, 2^12011103 is an apocalyptic number.

12011103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12011103 is a deficient number, since it is larger than the sum of its proper divisors (6793137).

12011103 is a wasteful number, since it uses less digits than its factorization.

12011103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 12011103 is about 3465.7038246221. The cubic root of 12011103 is about 229.0134365348.

Adding to 12011103 its reverse (30111021), we get a palindrome (42122124).

It can be divided in two parts, 1201 and 1103, that added together give a square (2304 = 48²).

The spelling of 12011103 in words is "twelve million, eleven thousand, one hundred three".