111220130023 has 4 divisors (see below), whose sum is σ = 111257194048. Its totient is φ = 111183066000.

The previous prime is 111220130009. The next prime is 111220130039. The reversal of 111220130023 is 320031022111.

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 111220130023 - 2¹⁷ = 111219998951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220129979 and 111220130006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220130003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18527511 + ... + 18533512.

It is an arithmetic number, because the mean of its divisors is an integer number (27814298512).

Almost surely, 2^111220130023 is an apocalyptic number.

111220130023 is a deficient number, since it is larger than the sum of its proper divisors (37064025).

111220130023 is an equidigital number, since it uses as much as digits as its factorization.

111220130023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37064024.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 111220130023 its reverse (320031022111), we get a palindrome (431251152134).

The spelling of 111220130023 in words is "one hundred eleven billion, two hundred twenty million, one hundred thirty thousand, twenty-three".