111345442123 has 2 divisors, whose sum is σ = 111345442124. Its totient is φ = 111345442122.

The previous prime is 111345442121. The next prime is 111345442127. The reversal of 111345442123 is 321244543111.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321244543111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111345442123 - 2¹ = 111345442121 is a prime.

Together with 111345442121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111345442121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55672721061 + 55672721062.

It is an arithmetic number, because the mean of its divisors is an integer number (55672721062).

Almost surely, 2^111345442123 is an apocalyptic number.

111345442123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111345442123 is an equidigital number, since it uses as much as digits as its factorization.

111345442123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 31.

Adding to 111345442123 its reverse (321244543111), we get a palindrome (432589985234).

The spelling of 111345442123 in words is "one hundred eleven billion, three hundred forty-five million, four hundred forty-two thousand, one hundred twenty-three".