111120111 has 6 divisors (see below), whose sum is σ = 160506840. Its totient is φ = 74080068.

The previous prime is 111120091. The next prime is 111120133. The reversal of 111120111 is 111021111.

It is not a de Polignac number, because 111120111 - 2²² = 106925807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12346679 = 111120111 / (1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 111120093 and 111120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6173331 + ... + 6173348.

It is an arithmetic number, because the mean of its divisors is an integer number (26751140).

Almost surely, 2^111120111 is an apocalyptic number.

111120111 is a deficient number, since it is larger than the sum of its proper divisors (49386729).

111120111 is a wasteful number, since it uses less digits than its factorization.

111120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12346685 (or 12346682 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 111120111 is about 10541.3524274639. The cubic root of 111120111 is about 480.7628365046.

Adding to 111120111 its reverse (111021111), we get a palindrome (222141222).

The spelling of 111120111 in words is "one hundred eleven million, one hundred twenty thousand, one hundred eleven".