222163213 has 2 divisors, whose sum is σ = 222163214. Its totient is φ = 222163212.

The previous prime is 222163211. The next prime is 222163217. The reversal of 222163213 is 312361222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206267044 + 15896169 = 14362^2 + 3987^2 .

It is a cyclic number.

It is not a de Polignac number, because 222163213 - 2¹ = 222163211 is a prime.

Together with 222163211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222163211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111081606 + 111081607.

It is an arithmetic number, because the mean of its divisors is an integer number (111081607).

Almost surely, 2^222163213 is an apocalyptic number.

It is an amenable number.

222163213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222163213 is an equidigital number, since it uses as much as digits as its factorization.

222163213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 222163213 is about 14905.1404891064. The cubic root of 222163213 is about 605.6532460947.

The spelling of 222163213 in words is "two hundred twenty-two million, one hundred sixty-three thousand, two hundred thirteen".