11203232123 has 4 divisors (see below), whose sum is σ = 11386891728. Its totient is φ = 11019572520.

The previous prime is 11203232113. The next prime is 11203232231. The reversal of 11203232123 is 32123230211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32123230211 = 59 ⋅544461529.

It is a cyclic number.

It is not a de Polignac number, because 11203232123 - 2²⁴ = 11186454907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11203232095 and 11203232104.

It is not an unprimeable number, because it can be changed into a prime (11203232113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91829711 + ... + 91829832.

It is an arithmetic number, because the mean of its divisors is an integer number (2846722932).

Almost surely, 2^11203232123 is an apocalyptic number.

11203232123 is a deficient number, since it is larger than the sum of its proper divisors (183659605).

11203232123 is an equidigital number, since it uses as much as digits as its factorization.

11203232123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183659604.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 11203232123 its reverse (32123230211), we get a palindrome (43326462334).

The spelling of 11203232123 in words is "eleven billion, two hundred three million, two hundred thirty-two thousand, one hundred twenty-three".