111020023 has 4 divisors (see below), whose sum is σ = 113601928. Its totient is φ = 108438120.

The previous prime is 111020003. The next prime is 111020029. The reversal of 111020023 is 320020111.

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 111020023 - 2⁵ = 111019991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111019991 and 111020009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1290888 + ... + 1290973.

It is an arithmetic number, because the mean of its divisors is an integer number (28400482).

Almost surely, 2^111020023 is an apocalyptic number.

111020023 is a deficient number, since it is larger than the sum of its proper divisors (2581905).

111020023 is an equidigital number, since it uses as much as digits as its factorization.

111020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581904.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 111020023 is about 10536.6039595308. The cubic root of 111020023 is about 480.6184490644.

Adding to 111020023 its reverse (320020111), we get a palindrome (431040134).

The spelling of 111020023 in words is "one hundred eleven million, twenty thousand, twenty-three".