212221222163 has 2 divisors, whose sum is σ = 212221222164. Its totient is φ = 212221222162.

The previous prime is 212221222093. The next prime is 212221222177. The reversal of 212221222163 is 361222122212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212221222163 - 2²² = 212217027859 is a prime.

It is not a weakly prime, because it can be changed into another prime (212221222183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110611081 + 106110611082.

It is an arithmetic number, because the mean of its divisors is an integer number (106110611082).

Almost surely, 2^212221222163 is an apocalyptic number.

212221222163 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221222163 is an equidigital number, since it uses as much as digits as its factorization.

212221222163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

Adding to 212221222163 its reverse (361222122212), we get a palindrome (573443344375).

The spelling of 212221222163 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred sixty-three".