11001122221211 has 4 divisors (see below), whose sum is σ = 11005005429912. Its totient is φ = 10997239012512.

The previous prime is 11001122221169. The next prime is 11001122221223. The reversal of 11001122221211 is 11212222110011.

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 11001122221211 - 2²⁶ = 11001055112347 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 11001122221211.

It is not an unprimeable number, because it can be changed into a prime (11001122221511) 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 3 ways as a sum of consecutive naturals, for example, 1941600101 + ... + 1941605766.

It is an arithmetic number, because the mean of its divisors is an integer number (2751251357478).

Almost surely, 2^{11001122221211} is an apocalyptic number.

11001122221211 is a deficient number, since it is larger than the sum of its proper divisors (3883208701).

11001122221211 is an equidigital number, since it uses as much as digits as its factorization.

11001122221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883208700.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11001122221211 its reverse (11212222110011), we get a palindrome (22213344331222).

The spelling of 11001122221211 in words is "eleven trillion, one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred eleven".