111000000111111 has 12 divisors (see below), whose sum is σ = 164666666831992. Its totient is φ = 72000000071856.

The previous prime is 111000000111047. The next prime is 111000000111149. The reversal of 111000000111111 is 111111000000111.

It is not a de Polignac number, because 111000000111111 - 2⁶ = 111000000111047 is a prime.

It is a super-3 number, since 3×111000000111111³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

111000000111111 is a modest number, since divided by 111111 gives 111 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 111000000111093 and 111000000111102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000000115111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166666666501 + ... + 166666667166.

Almost surely, 2^{111000000111111} is an apocalyptic number.

111000000111111 is a deficient number, since it is larger than the sum of its proper divisors (53666666720881).

111000000111111 is a wasteful number, since it uses less digits than its factorization.

111000000111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333333333710 (or 333333333707 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 111000000111111 its reverse (111111000000111), we get a palindrome (222111000111222).

It can be divided in two parts, 111000000111 and 111, that multiplied together give a palindrome (12321000012321).

The spelling of 111000000111111 in words is "one hundred eleven trillion, one hundred eleven thousand, one hundred eleven".