111111005105503 has 8 divisors (see below), whose sum is σ = 121172663796800. Its totient is φ = 101265726171168.

The previous prime is 111111005105501. The next prime is 111111005105533. The reversal of 111111005105503 is 305501500111111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111111005105503 - 2¹ = 111111005105501 is a prime.

It is a super-2 number, since 2×111111005105503² (a number of 29 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 (111111005105501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54094938168 + ... + 54094940221.

It is an arithmetic number, because the mean of its divisors is an integer number (15146582974600).

Almost surely, 2^{111111005105503} is an apocalyptic number.

111111005105503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111111005105503 is a deficient number, since it is larger than the sum of its proper divisors (10061658691297).

111111005105503 is a wasteful number, since it uses less digits than its factorization.

111111005105503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108189878481.

The product of its (nonzero) digits is 375, while the sum is 25.

Adding to 111111005105503 its reverse (305501500111111), we get a palindrome (416612505216614).

The spelling of 111111005105503 in words is "one hundred eleven trillion, one hundred eleven billion, five million, one hundred five thousand, five hundred three".