21222110220163 has 2 divisors, whose sum is σ = 21222110220164. Its totient is φ = 21222110220162.

The previous prime is 21222110220079. The next prime is 21222110220169. The reversal of 21222110220163 is 36102201122212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222110220163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222110220169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611055110081 + 10611055110082.

It is an arithmetic number, because the mean of its divisors is an integer number (10611055110082).

Almost surely, 2^{21222110220163} is an apocalyptic number.

21222110220163 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222110220163 is an equidigital number, since it uses as much as digits as its factorization.

21222110220163 is an evil number, because the sum of its binary digits is even.

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

Adding to 21222110220163 its reverse (36102201122212), we get a palindrome (57324311342375).

The spelling of 21222110220163 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty thousand, one hundred sixty-three".