201111101011211 has 4 divisors (see below), whose sum is σ = 202392063438192. Its totient is φ = 199830138584232.

The previous prime is 201111101011151. The next prime is 201111101011217. The reversal of 201111101011211 is 112110101111102.

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 201111101011211 - 2¹⁰ = 201111101010187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201111101011217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640481213255 + ... + 640481213568.

It is an arithmetic number, because the mean of its divisors is an integer number (50598015859548).

Almost surely, 2^{201111101011211} is an apocalyptic number.

201111101011211 is a deficient number, since it is larger than the sum of its proper divisors (1280962426981).

201111101011211 is a wasteful number, since it uses less digits than its factorization.

201111101011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280962426980.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 201111101011211 its reverse (112110101111102), we get a palindrome (313221202122313).

The spelling of 201111101011211 in words is "two hundred one trillion, one hundred eleven billion, one hundred one million, eleven thousand, two hundred eleven".