111110020123 has 4 divisors (see below), whose sum is σ = 111110970880. Its totient is φ = 111109069368.

The previous prime is 111110020111. The next prime is 111110020199. The reversal of 111110020123 is 321020011111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321020011111 = 103 ⋅3116699137.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111110020123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111110020423) 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, 270708 + ... + 543601.

It is an arithmetic number, because the mean of its divisors is an integer number (27777742720).

Almost surely, 2^111110020123 is an apocalyptic number.

111110020123 is a deficient number, since it is larger than the sum of its proper divisors (950757).

111110020123 is an equidigital number, since it uses as much as digits as its factorization.

111110020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950756.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111110020123 its reverse (321020011111), we get a palindrome (432130031234).

The spelling of 111110020123 in words is "one hundred eleven billion, one hundred ten million, twenty thousand, one hundred twenty-three".