11121222123 has 24 divisors (see below), whose sum is σ = 17528010240. Its totient is φ = 6738726960.

The previous prime is 11121222107. The next prime is 11121222173. The reversal of 11121222123 is 32122212111.

11121222123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11121222123 - 2⁴ = 11121222107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11121222096 and 11121222105.

It is not an unprimeable number, because it can be changed into a prime (11121222103) 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 23 ways as a sum of consecutive naturals, for example, 655218 + ... + 671976.

It is an arithmetic number, because the mean of its divisors is an integer number (730333760).

Almost surely, 2^11121222123 is an apocalyptic number.

11121222123 is a deficient number, since it is larger than the sum of its proper divisors (6406788117).

11121222123 is a wasteful number, since it uses less digits than its factorization.

11121222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23479 (or 23476 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 11121222123 its reverse (32122212111), we get a palindrome (43243434234).

The spelling of 11121222123 in words is "eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-three".