2112003 has 12 divisors (see below), whose sum is σ = 3101488. Its totient is φ = 1384560.

The previous prime is 2111971. The next prime is 2112007. The reversal of 2112003 is 3002112.

It is a happy number.

It is not a de Polignac number, because 2112003 - 2⁵ = 2111971 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1375 + ... + 2472.

2^2112003 is an apocalyptic number.

2112003 is a deficient number, since it is larger than the sum of its proper divisors (989485).

2112003 is a wasteful number, since it uses less digits than its factorization.

2112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3914 (or 3911 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2112003 is about 1453.2732021200. The cubic root of 2112003 is about 128.3014339486.

Adding to 2112003 its reverse (3002112), we get a palindrome (5114115).

The spelling of 2112003 in words is "two million, one hundred twelve thousand, three".