209212 has 12 divisors (see below), whose sum is σ = 369376. Its totient is φ = 103680.

The previous prime is 209203. The next prime is 209213. The reversal of 209212 is 212902.

It is a happy number.

209212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209213) by changing a digit.

209212 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637 + ... + 907.

2²⁰⁹²¹² is an apocalyptic number.

It is an amenable number.

209212 is a deficient number, since it is larger than the sum of its proper divisors (160164).

209212 is a wasteful number, since it uses less digits than its factorization.

209212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 209212 is about 457.3969829371. The cubic root of 209212 is about 59.3647801431.

The spelling of 209212 in words is "two hundred nine thousand, two hundred twelve".