111201211109 has 8 divisors (see below), whose sum is σ = 115116392160. Its totient is φ = 107291407216.

The previous prime is 111201211081. The next prime is 111201211129. The reversal of 111201211109 is 901112102111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111201211109 - 2³² = 106906243813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201211129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302179 + ... + 1384944.

It is an arithmetic number, because the mean of its divisors is an integer number (14389549020).

Almost surely, 2^111201211109 is an apocalyptic number.

It is an amenable number.

111201211109 is a deficient number, since it is larger than the sum of its proper divisors (3915181051).

111201211109 is a wasteful number, since it uses less digits than its factorization.

111201211109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688579.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 111201211109 in words is "one hundred eleven billion, two hundred one million, two hundred eleven thousand, one hundred nine".