21202222108163 has 2 divisors, whose sum is σ = 21202222108164. Its totient is φ = 21202222108162.

The previous prime is 21202222108127. The next prime is 21202222108189. The reversal of 21202222108163 is 36180122220212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21202222108163 - 2¹⁴ = 21202222091779 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202222108063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601111054081 + 10601111054082.

It is an arithmetic number, because the mean of its divisors is an integer number (10601111054082).

Almost surely, 2^{21202222108163} is an apocalyptic number.

21202222108163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202222108163 is an equidigital number, since it uses as much as digits as its factorization.

21202222108163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

Adding to 21202222108163 its reverse (36180122220212), we get a palindrome (57382344328375).

The spelling of 21202222108163 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-two million, one hundred eight thousand, one hundred sixty-three".