211226 has 4 divisors (see below), whose sum is σ = 316842. Its totient is φ = 105612.

The previous prime is 211219. The next prime is 211229. The reversal of 211226 is 622112.

211226 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148225 + 63001 = 385^2 + 251^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211226.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 211226.

It is not an unprimeable number, because it can be changed into a prime (211229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805 + ... + 52808.

2²¹¹²²⁶ is an apocalyptic number.

211226 is a deficient number, since it is larger than the sum of its proper divisors (105616).

211226 is a wasteful number, since it uses less digits than its factorization.

211226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105615.

The product of its digits is 48, while the sum is 14.

The square root of 211226 is about 459.5932984716. The cubic root of 211226 is about 59.5546657644.

Adding to 211226 its reverse (622112), we get a palindrome (833338).

The spelling of 211226 in words is "two hundred eleven thousand, two hundred twenty-six".