12009103 has 4 divisors (see below), whose sum is σ = 12423240. Its totient is φ = 11594968.

The previous prime is 12009091. The next prime is 12009119. The reversal of 12009103 is 30190021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30190021 = 103 ⋅293107.

It is a cyclic number.

It is not a de Polignac number, because 12009103 - 2⁵ = 12009071 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 (12009133) 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, 207025 + ... + 207082.

It is an arithmetic number, because the mean of its divisors is an integer number (3105810).

Almost surely, 2^12009103 is an apocalyptic number.

12009103 is a deficient number, since it is larger than the sum of its proper divisors (414137).

12009103 is an equidigital number, since it uses as much as digits as its factorization.

12009103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414136.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 12009103 is about 3465.4152709307. The cubic root of 12009103 is about 229.0007246216. Note that the first 3 decimals are identical.

Adding to 12009103 its reverse (30190021), we get a palindrome (42199124).

The spelling of 12009103 in words is "twelve million, nine thousand, one hundred three".