111000011111111 has 4 divisors (see below), whose sum is σ = 111000084791712. Its totient is φ = 110999937430512.

The previous prime is 111000011111027. The next prime is 111000011111159. The reversal of 111000011111111 is 111111110000111.

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 111000011111111 - 2¹⁴ = 111000011094727 is a prime.

It is a Duffinian number.

111000011111111 is a modest number, since divided by 11111111 gives 1110000 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111000011111092 and 111000011111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000011111161) 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, 34532351 + ... + 37609616.

It is an arithmetic number, because the mean of its divisors is an integer number (27750021197928).

Almost surely, 2^{111000011111111} is an apocalyptic number.

111000011111111 is a deficient number, since it is larger than the sum of its proper divisors (73680601).

111000011111111 is an equidigital number, since it uses as much as digits as its factorization.

111000011111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73680600.

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

Adding to 111000011111111 its reverse (111111110000111), we get a palindrome (222111121111222).

It can be divided in two parts, 1110000111 and 11111, that multiplied together give a palindrome (12333211233321).

The spelling of 111000011111111 in words is "one hundred eleven trillion, eleven million, one hundred eleven thousand, one hundred eleven".