111011113123 has 4 divisors (see below), whose sum is σ = 111057583120. Its totient is φ = 110964643128.

The previous prime is 111011113117. The next prime is 111011113133. The reversal of 111011113123 is 321311110111.

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 111011113123 - 2¹³ = 111011104931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111011113097 and 111011113106.

It is not an unprimeable number, because it can be changed into a prime (111011113133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23231415 + ... + 23236192.

It is an arithmetic number, because the mean of its divisors is an integer number (27764395780).

Almost surely, 2^111011113123 is an apocalyptic number.

111011113123 is a deficient number, since it is larger than the sum of its proper divisors (46469997).

111011113123 is an equidigital number, since it uses as much as digits as its factorization.

111011113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46469996.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 111011113123 its reverse (321311110111), we get a palindrome (432322223234).

The spelling of 111011113123 in words is "one hundred eleven billion, eleven million, one hundred thirteen thousand, one hundred twenty-three".