111100123 has 2 divisors, whose sum is σ = 111100124. Its totient is φ = 111100122.

The previous prime is 111100061. The next prime is 111100141. The reversal of 111100123 is 321001111.

It is a strong prime.

It is an emirp because it is prime and its reverse (321001111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111100123 - 2²⁵ = 77545691 is a prime.

It is not a weakly prime, because it can be changed into another prime (111103123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550061 + 55550062.

It is an arithmetic number, because the mean of its divisors is an integer number (55550062).

Almost surely, 2^111100123 is an apocalyptic number.

111100123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100123 is an equidigital number, since it uses as much as digits as its factorization.

111100123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 111100123 is about 10540.4043091335. The cubic root of 111100123 is about 480.7340086482.

Adding to 111100123 its reverse (321001111), we get a palindrome (432101234).

The spelling of 111100123 in words is "one hundred eleven million, one hundred thousand, one hundred twenty-three".