11221320163 has 2 divisors, whose sum is σ = 11221320164. Its totient is φ = 11221320162.

The previous prime is 11221320091. The next prime is 11221320167. The reversal of 11221320163 is 36102312211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11221320163 - 2⁹ = 11221319651 is a prime.

It is not a weakly prime, because it can be changed into another prime (11221320167) 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, 5610660081 + 5610660082.

It is an arithmetic number, because the mean of its divisors is an integer number (5610660082).

Almost surely, 2^11221320163 is an apocalyptic number.

11221320163 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221320163 is an equidigital number, since it uses as much as digits as its factorization.

11221320163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11221320163 its reverse (36102312211), we get a palindrome (47323632374).

The spelling of 11221320163 in words is "eleven billion, two hundred twenty-one million, three hundred twenty thousand, one hundred sixty-three".