111011220111109 has 4 divisors (see below), whose sum is σ = 111011661652140. Its totient is φ = 111010778570080.

The previous prime is 111011220111089. The next prime is 111011220111173. The reversal of 111011220111109 is 901111022110111.

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 47108702962084 + 63902517149025 = 6863578^2 + 7993905^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011220111109 - 2¹³ = 111011220102917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111011220111109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011220111409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220393174 + ... + 220896295.

It is an arithmetic number, because the mean of its divisors is an integer number (27752915413035).

Almost surely, 2^{111011220111109} is an apocalyptic number.

It is an amenable number.

111011220111109 is a deficient number, since it is larger than the sum of its proper divisors (441541031).

111011220111109 is an equidigital number, since it uses as much as digits as its factorization.

111011220111109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441541030.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 111011220111109 in words is "one hundred eleven trillion, eleven billion, two hundred twenty million, one hundred eleven thousand, one hundred nine".