128220163 has 2 divisors, whose sum is σ = 128220164. Its totient is φ = 128220162.

The previous prime is 128220149. The next prime is 128220179. The reversal of 128220163 is 361022821.

It is a weak prime.

It is an emirp because it is prime and its reverse (361022821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128220163 - 2²⁵ = 94665731 is a prime.

It is not a weakly prime, because it can be changed into another prime (128260163) 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, 64110081 + 64110082.

It is an arithmetic number, because the mean of its divisors is an integer number (64110082).

Almost surely, 2^128220163 is an apocalyptic number.

128220163 is a deficient number, since it is larger than the sum of its proper divisors (1).

128220163 is an equidigital number, since it uses as much as digits as its factorization.

128220163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 128220163 is about 11323.4342405473. The cubic root of 128220163 is about 504.2572002829.

Adding to 128220163 its reverse (361022821), we get a palindrome (489242984).

The spelling of 128220163 in words is "one hundred twenty-eight million, two hundred twenty thousand, one hundred sixty-three".