11123331203 has 4 divisors (see below), whose sum is σ = 11382013368. Its totient is φ = 10864649040.

The previous prime is 11123331173. The next prime is 11123331209. The reversal of 11123331203 is 30213332111.

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 11123331203 - 2²⁶ = 11056222339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123331209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129341018 + ... + 129341103.

It is an arithmetic number, because the mean of its divisors is an integer number (2845503342).

Almost surely, 2^11123331203 is an apocalyptic number.

11123331203 is a deficient number, since it is larger than the sum of its proper divisors (258682165).

11123331203 is an equidigital number, since it uses as much as digits as its factorization.

11123331203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258682164.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11123331203 its reverse (30213332111), we get a palindrome (41336663314).

The spelling of 11123331203 in words is "eleven billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred three".