222266489 has 2 divisors, whose sum is σ = 222266490. Its totient is φ = 222266488.

The previous prime is 222266467. The next prime is 222266491. The reversal of 222266489 is 984662222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182790400 + 39476089 = 13520^2 + 6283^2 .

It is a cyclic number.

It is not a de Polignac number, because 222266489 - 2¹² = 222262393 is a prime.

Together with 222266491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222266419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111133244 + 111133245.

It is an arithmetic number, because the mean of its divisors is an integer number (111133245).

Almost surely, 2^222266489 is an apocalyptic number.

It is an amenable number.

222266489 is a deficient number, since it is larger than the sum of its proper divisors (1).

222266489 is an equidigital number, since it uses as much as digits as its factorization.

222266489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 41.

The square root of 222266489 is about 14908.6045289289. The cubic root of 222266489 is about 605.7470806439.

The spelling of 222266489 in words is "two hundred twenty-two million, two hundred sixty-six thousand, four hundred eighty-nine".