111111011100001 has 8 divisors (see below), whose sum is σ = 126482099592384. Its totient is φ = 96618270521520.

The previous prime is 111111011099993. The next prime is 111111011100013. The reversal of 111111011100001 is 100001110111111.

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 111111011100001 - 2³ = 111111011099993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111111011100031) 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, 219586978206 + ... + 219586978711.

It is an arithmetic number, because the mean of its divisors is an integer number (15810262449048).

Almost surely, 2^{111111011100001} is an apocalyptic number.

111111011100001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111111011100001 is a deficient number, since it is larger than the sum of its proper divisors (15371088492383).

111111011100001 is a wasteful number, since it uses less digits than its factorization.

111111011100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439173956951.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 111111011100001 its reverse (100001110111111), we get a palindrome (211112121211112).

The spelling of 111111011100001 in words is "one hundred eleven trillion, one hundred eleven billion, eleven million, one hundred thousand, one".