111122211423 has 8 divisors (see below), whose sum is σ = 150374336128. Its totient is φ = 72975780504.

The previous prime is 111122211323. The next prime is 111122211427. The reversal of 111122211423 is 324112221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111122211423 - 2⁹ = 111122210911 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 111122211423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122211427) 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 7 ways as a sum of consecutive naturals, for example, 276423211 + ... + 276423612.

It is an arithmetic number, because the mean of its divisors is an integer number (18796792016).

Almost surely, 2^111122211423 is an apocalyptic number.

111122211423 is a deficient number, since it is larger than the sum of its proper divisors (39252124705).

111122211423 is an equidigital number, since it uses as much as digits as its factorization.

111122211423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552846893.

The product of its digits is 192, while the sum is 21.

Adding to 111122211423 its reverse (324112221111), we get a palindrome (435234432534).

The spelling of 111122211423 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred eleven thousand, four hundred twenty-three".