111001122209 has 4 divisors (see below), whose sum is σ = 117530600004. Its totient is φ = 104471644416.

The previous prime is 111001122203. The next prime is 111001122233. The reversal of 111001122209 is 902221100111.

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 87067485184 + 23933637025 = 295072^2 + 154705^2 .

It is not a de Polignac number, because 111001122209 - 2²⁴ = 110984344993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001122203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3264738872 + ... + 3264738905.

It is an arithmetic number, because the mean of its divisors is an integer number (29382650001).

Almost surely, 2^111001122209 is an apocalyptic number.

It is an amenable number.

111001122209 is a deficient number, since it is larger than the sum of its proper divisors (6529477795).

111001122209 is an equidigital number, since it uses as much as digits as its factorization.

111001122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529477794.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 111001122209 in words is "one hundred eleven billion, one million, one hundred twenty-two thousand, two hundred nine".