111200009 has 16 divisors (see below), whose sum is σ = 123586560. Its totient is φ = 99517440.

The previous prime is 111200003. The next prime is 111200053. The reversal of 111200009 is 900002111.

It is a cyclic number.

It is not a de Polignac number, because 111200009 - 2²⁴ = 94422793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111199966 and 111200002.

It is not an unprimeable number, because it can be changed into a prime (111200003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73937 + ... + 75425.

It is an arithmetic number, because the mean of its divisors is an integer number (7724160).

Almost surely, 2^111200009 is an apocalyptic number.

It is an amenable number.

111200009 is a deficient number, since it is larger than the sum of its proper divisors (12386551).

111200009 is a wasteful number, since it uses less digits than its factorization.

111200009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 111200009 is about 10545.1414879081. The cubic root of 111200009 is about 480.8780355328.

The spelling of 111200009 in words is "one hundred eleven million, two hundred thousand, nine".