111441440143 has 4 divisors (see below), whose sum is σ = 121572480168. Its totient is φ = 101310400120.

The previous prime is 111441440101. The next prime is 111441440213. The reversal of 111441440143 is 341044144111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341044144111 = 11 ⋅31004013101.

It is a cyclic number.

It is not a de Polignac number, because 111441440143 - 2⁹ = 111441439631 is a prime.

It is a super-2 number, since 2×111441440143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111441440443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5065519996 + ... + 5065520017.

It is an arithmetic number, because the mean of its divisors is an integer number (30393120042).

Almost surely, 2^111441440143 is an apocalyptic number.

111441440143 is a deficient number, since it is larger than the sum of its proper divisors (10131040025).

111441440143 is a wasteful number, since it uses less digits than its factorization.

111441440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10131040024.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 111441440143 its reverse (341044144111), we get a palindrome (452485584254).

The spelling of 111441440143 in words is "one hundred eleven billion, four hundred forty-one million, four hundred forty thousand, one hundred forty-three".