111220120123 has 8 divisors (see below), whose sum is σ = 127168205792. Its totient is φ = 95286908736.

The previous prime is 111220120069. The next prime is 111220120129. The reversal of 111220120123 is 321021022111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111220120123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220120097 and 111220120106.

It is not an unprimeable number, because it can be changed into a prime (111220120129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3702540 + ... + 3732457.

It is an arithmetic number, because the mean of its divisors is an integer number (15896025724).

Almost surely, 2^111220120123 is an apocalyptic number.

111220120123 is a deficient number, since it is larger than the sum of its proper divisors (15948085669).

111220120123 is an equidigital number, since it uses as much as digits as its factorization.

111220120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437141.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111220120123 its reverse (321021022111), we get a palindrome (432241142234).

The spelling of 111220120123 in words is "one hundred eleven billion, two hundred twenty million, one hundred twenty thousand, one hundred twenty-three".