11120222221 has 2 divisors, whose sum is σ = 11120222222. Its totient is φ = 11120222220.

The previous prime is 11120222159. The next prime is 11120222233. The reversal of 11120222221 is 12222202111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9084949225 + 2035272996 = 95315^2 + 45114^2 .

It is a cyclic number.

It is not a de Polignac number, because 11120222221 - 2¹¹ = 11120220173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11120222195 and 11120222204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11120222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560111110 + 5560111111.

It is an arithmetic number, because the mean of its divisors is an integer number (5560111111).

Almost surely, 2^11120222221 is an apocalyptic number.

It is an amenable number.

11120222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11120222221 is an equidigital number, since it uses as much as digits as its factorization.

11120222221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11120222221 its reverse (12222202111), we get a palindrome (23342424332).

The spelling of 11120222221 in words is "eleven billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".