212266 has 8 divisors (see below), whose sum is σ = 320544. Its totient is φ = 105420.

The previous prime is 212243. The next prime is 212281. The reversal of 212266 is 662212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2²¹²²⁶⁶ is an apocalyptic number.

212266 is a deficient number, since it is larger than the sum of its proper divisors (108278).

212266 is a wasteful number, since it uses less digits than its factorization.

212266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716.

The product of its digits is 288, while the sum is 19.

The square root of 212266 is about 460.7233443185. The cubic root of 212266 is about 59.6522476246.

Adding to 212266 its reverse (662212), we get a palindrome (874478).

It can be divided in two parts, 21 and 2266, that multiplied together give a triangular number (47586 = T₃₀₈).

The spelling of 212266 in words is "two hundred twelve thousand, two hundred sixty-six".