209222 has 12 divisors (see below), whose sum is σ = 340380. Its totient is φ = 96408.

The previous prime is 209221. The next prime is 209227. The reversal of 209222 is 222902.

It is a happy number.

It is a plaindrome in base 9.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 209222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29 + ... + 647.

It is an arithmetic number, because the mean of its divisors is an integer number (28365).

2²⁰⁹²²² is an apocalyptic number.

209222 is a deficient number, since it is larger than the sum of its proper divisors (131158).

209222 is a wasteful number, since it uses less digits than its factorization.

209222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 209222 is about 457.4079142297. The cubic root of 209222 is about 59.3657259754.

The spelling of 209222 in words is "two hundred nine thousand, two hundred twenty-two".