11710221 has 16 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 7632560.

The previous prime is 11710217. The next prime is 11710253. The reversal of 11710221 is 12201711.

11710221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11710221 - 2² = 11710217 is a prime.

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 11710221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11710291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32440 + ... + 32798.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^11710221 is an apocalyptic number.

It is an amenable number.

11710221 is a deficient number, since it is larger than the sum of its proper divisors (4256499).

11710221 is a wasteful number, since it uses less digits than its factorization.

11710221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 28, while the sum is 15.

The square root of 11710221 is about 3422.0200174751. The cubic root of 11710221 is about 227.0849559424.

Adding to 11710221 its reverse (12201711), we get a palindrome (23911932).

The spelling of 11710221 in words is "eleven million, seven hundred ten thousand, two hundred twenty-one".