211221300163 has 2 divisors, whose sum is σ = 211221300164. Its totient is φ = 211221300162.

The previous prime is 211221300067. The next prime is 211221300167. The reversal of 211221300163 is 361003122112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211221300163 - 2²⁵ = 211187745731 is a prime.

It is a super-2 number, since 2×211221300163² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211221300167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610650081 + 105610650082.

It is an arithmetic number, because the mean of its divisors is an integer number (105610650082).

Almost surely, 2^211221300163 is an apocalyptic number.

211221300163 is a deficient number, since it is larger than the sum of its proper divisors (1).

211221300163 is an equidigital number, since it uses as much as digits as its factorization.

211221300163 is an evil number, because the sum of its binary digits is even.

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

Adding to 211221300163 its reverse (361003122112), we get a palindrome (572224422275).

The spelling of 211221300163 in words is "two hundred eleven billion, two hundred twenty-one million, three hundred thousand, one hundred sixty-three".