111000561023 has 4 divisors (see below), whose sum is σ = 121091521128. Its totient is φ = 100909600920.

The previous prime is 111000560989. The next prime is 111000561043. The reversal of 111000561023 is 320165000111.

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 111000561023 - 2⁶ = 111000560959 is a prime.

It is a super-2 number, since 2×111000561023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000560986 and 111000561004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000561043) 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, 5045480036 + ... + 5045480057.

It is an arithmetic number, because the mean of its divisors is an integer number (30272880282).

Almost surely, 2^111000561023 is an apocalyptic number.

111000561023 is a deficient number, since it is larger than the sum of its proper divisors (10090960105).

111000561023 is a wasteful number, since it uses less digits than its factorization.

111000561023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10090960104.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 111000561023 its reverse (320165000111), we get a palindrome (431165561134).

The spelling of 111000561023 in words is "one hundred eleven billion, five hundred sixty-one thousand, twenty-three".