111121112023 has 4 divisors (see below), whose sum is σ = 111125395800. Its totient is φ = 111116828248.

The previous prime is 111121112009. The next prime is 111121112027. The reversal of 111121112023 is 320211121111.

It is a happy number.

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 111121112023 - 2⁵ = 111121111991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111121111988 and 111121112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121112027) 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, 2102740 + ... + 2154937.

It is an arithmetic number, because the mean of its divisors is an integer number (27781348950).

Almost surely, 2^111121112023 is an apocalyptic number.

111121112023 is a deficient number, since it is larger than the sum of its proper divisors (4283777).

111121112023 is an equidigital number, since it uses as much as digits as its factorization.

111121112023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283776.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111121112023 its reverse (320211121111), we get a palindrome (431332233134).

The spelling of 111121112023 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, twenty-three".