11133422221 has 2 divisors, whose sum is σ = 11133422222. Its totient is φ = 11133422220.

The previous prime is 11133422197. The next prime is 11133422273. The reversal of 11133422221 is 12222433111.

11133422221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10995829321 + 137592900 = 104861^2 + 11730^2 .

It is a cyclic number.

It is not a de Polignac number, because 11133422221 - 2¹⁷ = 11133291149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11133422192 and 11133422201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11133422821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566711110 + 5566711111.

It is an arithmetic number, because the mean of its divisors is an integer number (5566711111).

Almost surely, 2^11133422221 is an apocalyptic number.

It is an amenable number.

11133422221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11133422221 is an equidigital number, since it uses as much as digits as its factorization.

11133422221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

Adding to 11133422221 its reverse (12222433111), we get a palindrome (23355855332).

The spelling of 11133422221 in words is "eleven billion, one hundred thirty-three million, four hundred twenty-two thousand, two hundred twenty-one".