11000228221 has 2 divisors, whose sum is σ = 11000228222. Its totient is φ = 11000228220.

The previous prime is 11000228207. The next prime is 11000228227. The reversal of 11000228221 is 12282200011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6870752100 + 4129476121 = 82890^2 + 64261^2 .

It is an emirp because it is prime and its reverse (12282200011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11000228221 - 2¹³ = 11000220029 is a prime.

It is a super-3 number, since 3×11000228221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000228227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500114110 + 5500114111.

It is an arithmetic number, because the mean of its divisors is an integer number (5500114111).

Almost surely, 2^11000228221 is an apocalyptic number.

It is an amenable number.

11000228221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000228221 is an equidigital number, since it uses as much as digits as its factorization.

11000228221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11000228221 its reverse (12282200011), we get a palindrome (23282428232).

The spelling of 11000228221 in words is "eleven billion, two hundred twenty-eight thousand, two hundred twenty-one".