11201323123 has 4 divisors (see below), whose sum is σ = 11474526168. Its totient is φ = 10928120080.

The previous prime is 11201323117. The next prime is 11201323129. The reversal of 11201323123 is 32132310211.

11201323123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (11201323117) and next prime (11201323129).

It is a cyclic number.

It is not a de Polignac number, because 11201323123 - 2³³ = 2611388531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11201323123.

It is not an unprimeable number, because it can be changed into a prime (11201323129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136601461 + ... + 136601542.

It is an arithmetic number, because the mean of its divisors is an integer number (2868631542).

Almost surely, 2^11201323123 is an apocalyptic number.

11201323123 is a deficient number, since it is larger than the sum of its proper divisors (273203045).

11201323123 is an equidigital number, since it uses as much as digits as its factorization.

11201323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273203044.

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

Adding to 11201323123 its reverse (32132310211), we get a palindrome (43333633334).

The spelling of 11201323123 in words is "eleven billion, two hundred one million, three hundred twenty-three thousand, one hundred twenty-three".