11212011212211 has 24 divisors (see below), whose sum is σ = 16900186118400. Its totient is φ = 7149297876336.

The previous prime is 11212011212177. The next prime is 11212011212291. The reversal of 11212011212211 is 11221211021211.

It is a happy number.

11212011212211 is a `hidden beast` number, since 1 + 121 + 201 + 121 + 221 + 1 = 666.

It is not a de Polignac number, because 11212011212211 - 2¹⁰ = 11212011211187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212011212291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2344690 + ... + 5284088.

It is an arithmetic number, because the mean of its divisors is an integer number (704174421600).

Almost surely, 2^{11212011212211} is an apocalyptic number.

11212011212211 is a deficient number, since it is larger than the sum of its proper divisors (5688174906189).

11212011212211 is a wasteful number, since it uses less digits than its factorization.

11212011212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957855 (or 2957852 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212011212211 its reverse (11221211021211), we get a palindrome (22433222233422).

The spelling of 11212011212211 in words is "eleven trillion, two hundred twelve billion, eleven million, two hundred twelve thousand, two hundred eleven".