11103123203 has 4 divisors (see below), whose sum is σ = 11373931128. Its totient is φ = 10832315280.

The previous prime is 11103123191. The next prime is 11103123221. The reversal of 11103123203 is 30232130111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11103123203 - 2¹⁸ = 11102861059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103123263) 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, 135403901 + ... + 135403982.

It is an arithmetic number, because the mean of its divisors is an integer number (2843482782).

Almost surely, 2^11103123203 is an apocalyptic number.

11103123203 is a deficient number, since it is larger than the sum of its proper divisors (270807925).

11103123203 is an equidigital number, since it uses as much as digits as its factorization.

11103123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270807924.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11103123203 its reverse (30232130111), we get a palindrome (41335253314).

The spelling of 11103123203 in words is "eleven billion, one hundred three million, one hundred twenty-three thousand, two hundred three".