201111121112011 has 6 divisors (see below), whose sum is σ = 221056025685236. Its totient is φ = 182828291919900.

The previous prime is 201111121112009. The next prime is 201111121112029. The reversal of 201111121112011 is 110211121111102.

It is not a de Polignac number, because 201111121112011 - 2¹ = 201111121112009 is a prime.

It is a super-2 number, since 2×201111121112011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111121112071) 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 5 ways as a sum of consecutive naturals, for example, 831037690425 + ... + 831037690666.

Almost surely, 2^{201111121112011} is an apocalyptic number.

201111121112011 is a deficient number, since it is larger than the sum of its proper divisors (19944904573225).

201111121112011 is a wasteful number, since it uses less digits than its factorization.

201111121112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662075381113 (or 1662075381102 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 201111121112011 its reverse (110211121111102), we get a palindrome (311322242223113).

Subtracting from 201111121112011 its reverse (110211121111102), we obtain a palindrome (90900000000909).

The spelling of 201111121112011 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, eleven".