11122112123 has 4 divisors (see below), whose sum is σ = 11220538008. Its totient is φ = 11023686240.

The previous prime is 11122112117. The next prime is 11122112167. The reversal of 11122112123 is 32121122111.

It is a happy number.

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 11122112123 - 2¹² = 11122108027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122112923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49212773 + ... + 49212998.

It is an arithmetic number, because the mean of its divisors is an integer number (2805134502).

Almost surely, 2^11122112123 is an apocalyptic number.

11122112123 is a deficient number, since it is larger than the sum of its proper divisors (98425885).

11122112123 is an equidigital number, since it uses as much as digits as its factorization.

11122112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98425884.

The product of its digits is 48, while the sum is 17.

Adding to 11122112123 its reverse (32121122111), we get a palindrome (43243234234).

The spelling of 11122112123 in words is "eleven billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-three".