201111612011 has 8 divisors (see below), whose sum is σ = 201613923264. Its totient is φ = 200609418240.

The previous prime is 201111611999. The next prime is 201111612071. The reversal of 201111612011 is 110216111102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201111612011 - 2¹⁴ = 201111595627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111612071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4125566 + ... + 4174028.

It is an arithmetic number, because the mean of its divisors is an integer number (25201740408).

Almost surely, 2^201111612011 is an apocalyptic number.

201111612011 is a deficient number, since it is larger than the sum of its proper divisors (502311253).

201111612011 is an equidigital number, since it uses as much as digits as its factorization.

201111612011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58741.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 201111612011 its reverse (110216111102), we get a palindrome (311327723113).

The spelling of 201111612011 in words is "two hundred one billion, one hundred eleven million, six hundred twelve thousand, eleven".