201211122212011 has 2 divisors, whose sum is σ = 201211122212012. Its totient is φ = 201211122212010.

The previous prime is 201211122211999. The next prime is 201211122212047. The reversal of 201211122212011 is 110212221112102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201211122212011 - 2²¹ = 201211120114859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201211122212011.

It is not a weakly prime, because it can be changed into another prime (201211128212011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100605561106005 + 100605561106006.

It is an arithmetic number, because the mean of its divisors is an integer number (100605561106006).

Almost surely, 2^{201211122212011} is an apocalyptic number.

201211122212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201211122212011 is an equidigital number, since it uses as much as digits as its factorization.

201211122212011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201211122212011 its reverse (110212221112102), we get a palindrome (311423343324113).

The spelling of 201211122212011 in words is "two hundred one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, eleven".