201111121221103 has 4 divisors (see below), whose sum is σ = 201121721098888. Its totient is φ = 201100521343320.

The previous prime is 201111121221089. The next prime is 201111121221169. The reversal of 201111121221103 is 301122121111102.

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

It is a cyclic number.

It is not a de Polignac number, because 201111121221103 - 2⁵ = 201111121221071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111121221503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5299910433 + ... + 5299948378.

It is an arithmetic number, because the mean of its divisors is an integer number (50280430274722).

Almost surely, 2^{201111121221103} is an apocalyptic number.

201111121221103 is a deficient number, since it is larger than the sum of its proper divisors (10599877785).

201111121221103 is a wasteful number, since it uses less digits than its factorization.

201111121221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10599877784.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 201111121221103 its reverse (301122121111102), we get a palindrome (502233242332205).

The spelling of 201111121221103 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred three".