201111122112011 has 16 divisors (see below), whose sum is σ = 211438175217984. Its totient is φ = 190918852760064.

The previous prime is 201111122112001. The next prime is 201111122112023. The reversal of 201111122112011 is 110211221111102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201111122112011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111122112001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29398970 + ... + 35588223.

It is an arithmetic number, because the mean of its divisors is an integer number (13214885951124).

Almost surely, 2^{201111122112011} is an apocalyptic number.

201111122112011 is a deficient number, since it is larger than the sum of its proper divisors (10327053105973).

201111122112011 is a wasteful number, since it uses less digits than its factorization.

201111122112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64988230.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 201111122112011 its reverse (110211221111102), we get a palindrome (311322343223113).

The spelling of 201111122112011 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twelve thousand, eleven".