11321123203 has 16 divisors (see below), whose sum is σ = 12455694720. Its totient is φ = 10226571264.

The previous prime is 11321123179. The next prime is 11321123239. The reversal of 11321123203 is 30232112311.

It is a de Polignac number, because none of the positive numbers 2^k-11321123203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11321123243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67275 + ... + 164827.

It is an arithmetic number, because the mean of its divisors is an integer number (778480920).

Almost surely, 2^11321123203 is an apocalyptic number.

11321123203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11321123203 is a deficient number, since it is larger than the sum of its proper divisors (1134571517).

11321123203 is a wasteful number, since it uses less digits than its factorization.

11321123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97758.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11321123203 its reverse (30232112311), we get a palindrome (41553235514).

The spelling of 11321123203 in words is "eleven billion, three hundred twenty-one million, one hundred twenty-three thousand, two hundred three".