11223103123 has 4 divisors (see below), whose sum is σ = 11223321120. Its totient is φ = 11222885128.

The previous prime is 11223103051. The next prime is 11223103159. The reversal of 11223103123 is 32130132211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32130132211 = 43 ⋅747212377.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223103123 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 11223103123.

It is not an unprimeable number, because it can be changed into a prime (11223103183) 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, 16038 + ... + 150676.

It is an arithmetic number, because the mean of its divisors is an integer number (2805830280).

Almost surely, 2^11223103123 is an apocalyptic number.

11223103123 is a deficient number, since it is larger than the sum of its proper divisors (217997).

11223103123 is an equidigital number, since it uses as much as digits as its factorization.

11223103123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217996.

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

Adding to 11223103123 its reverse (32130132211), we get a palindrome (43353235334).

The spelling of 11223103123 in words is "eleven billion, two hundred twenty-three million, one hundred three thousand, one hundred twenty-three".