11123233123 has 4 divisors (see below), whose sum is σ = 11123496720. Its totient is φ = 11122969528.

The previous prime is 11123233111. The next prime is 11123233201. The reversal of 11123233123 is 32133232111.

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 11123233123 - 2⁹ = 11123232611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123233094 and 11123233103.

It is not an unprimeable number, because it can be changed into a prime (11123233223) 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, 52663 + ... + 158176.

It is an arithmetic number, because the mean of its divisors is an integer number (2780874180).

Almost surely, 2^11123233123 is an apocalyptic number.

11123233123 is a deficient number, since it is larger than the sum of its proper divisors (263597).

11123233123 is an equidigital number, since it uses as much as digits as its factorization.

11123233123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263596.

The product of its digits is 648, while the sum is 22.

Adding to 11123233123 its reverse (32133232111), we get a palindrome (43256465234).

The spelling of 11123233123 in words is "eleven billion, one hundred twenty-three million, two hundred thirty-three thousand, one hundred twenty-three".