111111100001111 has 8 divisors (see below), whose sum is σ = 126986487052800. Its totient is φ = 95236306140888.

The previous prime is 111111100001087. The next prime is 111111100001123. The reversal of 111111100001111 is 111100001111111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111111100001111 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111111100001092 and 111111100001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111100001411) 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 7 ways as a sum of consecutive naturals, for example, 147896411 + ... + 148645788.

It is an arithmetic number, because the mean of its divisors is an integer number (15873310881600).

Almost surely, 2^{111111100001111} is an apocalyptic number.

111111100001111 is a deficient number, since it is larger than the sum of its proper divisors (15875387051689).

111111100001111 is an equidigital number, since it uses as much as digits as its factorization.

111111100001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296595733.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 111111100001111 its reverse (111100001111111), we get a palindrome (222211101112222).

It can be divided in two parts, 11111110000 and 1111, that added together give a palindrome (11111111111).

The spelling of 111111100001111 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, one thousand, one hundred eleven".