11003022221 has 2 divisors, whose sum is σ = 11003022222. Its totient is φ = 11003022220.

The previous prime is 11003022209. The next prime is 11003022241. The reversal of 11003022221 is 12222030011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8801066596 + 2201955625 = 93814^2 + 46925^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003022221 - 2⁶ = 11003022157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11003022196 and 11003022205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11003022241) 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, 5501511110 + 5501511111.

It is an arithmetic number, because the mean of its divisors is an integer number (5501511111).

Almost surely, 2^11003022221 is an apocalyptic number.

It is an amenable number.

11003022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003022221 is an equidigital number, since it uses as much as digits as its factorization.

11003022221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 11003022221 its reverse (12222030011), we get a palindrome (23225052232).

The spelling of 11003022221 in words is "eleven billion, three million, twenty-two thousand, two hundred twenty-one".