201111122001011 has 4 divisors (see below), whose sum is σ = 201214308828000. Its totient is φ = 201007935174024.

The previous prime is 201111122001007. The next prime is 201111122001061. The reversal of 201111122001011 is 110100221111102.

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 201111122001011 - 2² = 201111122001007 is a prime.

It is a super-3 number, since 3×201111122001011³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111122001061) 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, 51593410571 + ... + 51593414468.

It is an arithmetic number, because the mean of its divisors is an integer number (50303577207000).

Almost surely, 2^{201111122001011} is an apocalyptic number.

201111122001011 is a deficient number, since it is larger than the sum of its proper divisors (103186826989).

201111122001011 is a wasteful number, since it uses less digits than its factorization.

201111122001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103186826988.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 201111122001011 its reverse (110100221111102), we get a palindrome (311211343112113).

The spelling of 201111122001011 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-two million, one thousand, eleven".