201211101332011 has 4 divisors (see below), whose sum is σ = 201211334132224. Its totient is φ = 201210868531800.

The previous prime is 201211101331997. The next prime is 201211101332039. The reversal of 201211101332011 is 110233101112102.

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 201211101332011 - 2¹¹ = 201211101329963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201211101332011.

It is not an unprimeable number, because it can be changed into a prime (201211101338011) 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, 115098795 + ... + 116833876.

It is an arithmetic number, because the mean of its divisors is an integer number (50302833533056).

Almost surely, 2^{201211101332011} is an apocalyptic number.

201211101332011 is a deficient number, since it is larger than the sum of its proper divisors (232800213).

201211101332011 is an equidigital number, since it uses as much as digits as its factorization.

201211101332011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232800212.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 201211101332011 its reverse (110233101112102), we get a palindrome (311444202444113).

The spelling of 201211101332011 in words is "two hundred one trillion, two hundred eleven billion, one hundred one million, three hundred thirty-two thousand, eleven".