1120011111 has 16 divisors (see below), whose sum is σ = 1661587200. Its totient is φ = 745633944.

The previous prime is 1120011089. The next prime is 1120011131. The reversal of 1120011111 is 1111100211.

It is not a de Polignac number, because 1120011111 - 2¹⁷ = 1119880039 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1120011093 and 1120011102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120011131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8901 + ... + 48158.

It is an arithmetic number, because the mean of its divisors is an integer number (103849200).

Almost surely, 2^1120011111 is an apocalyptic number.

1120011111 is a deficient number, since it is larger than the sum of its proper divisors (541576089).

1120011111 is an equidigital number, since it uses as much as digits as its factorization.

1120011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57795 (or 57789 counting only the distinct ones).

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

The square root of 1120011111 is about 33466.5670632648. The cubic root of 1120011111 is about 1038.5022545137.

Adding to 1120011111 its reverse (1111100211), we get a palindrome (2231111322).

The spelling of 1120011111 in words is "one billion, one hundred twenty million, eleven thousand, one hundred eleven".