111120545 has 4 divisors (see below), whose sum is σ = 133344660. Its totient is φ = 88896432.

The previous prime is 111120533. The next prime is 111120571. The reversal of 111120545 is 545021111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30426256 + 80694289 = 5516^2 + 8983^2 .

It is a cyclic number.

It is not a de Polignac number, because 111120545 - 2⁶ = 111120481 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11112050 + ... + 11112059.

It is an arithmetic number, because the mean of its divisors is an integer number (33336165).

Almost surely, 2^111120545 is an apocalyptic number.

It is an amenable number.

111120545 is a deficient number, since it is larger than the sum of its proper divisors (22224115).

111120545 is an equidigital number, since it uses as much as digits as its factorization.

111120545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22224114.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 111120545 is about 10541.3730130377. The cubic root of 111120545 is about 480.7634624063.

Adding to 111120545 its reverse (545021111), we get a palindrome (656141656).

The spelling of 111120545 in words is "one hundred eleven million, one hundred twenty thousand, five hundred forty-five".