11012221021211 has 2 divisors, whose sum is σ = 11012221021212. Its totient is φ = 11012221021210.

The previous prime is 11012221021171. The next prime is 11012221021213. The reversal of 11012221021211 is 11212012221011.

11012221021211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11012221021211 is a prime.

Together with 11012221021213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11012221021211.

It is not a weakly prime, because it can be changed into another prime (11012221021213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506110510605 + 5506110510606.

It is an arithmetic number, because the mean of its divisors is an integer number (5506110510606).

Almost surely, 2^{11012221021211} is an apocalyptic number.

11012221021211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012221021211 is an equidigital number, since it uses as much as digits as its factorization.

11012221021211 is an evil number, because the sum of its binary digits is even.

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

Adding to 11012221021211 its reverse (11212012221011), we get a palindrome (22224233242222).

The spelling of 11012221021211 in words is "eleven trillion, twelve billion, two hundred twenty-one million, twenty-one thousand, two hundred eleven".