11310221 has 16 divisors (see below), whose sum is σ = 12628224. Its totient is φ = 10064064.

The previous prime is 11310217. The next prime is 11310223. The reversal of 11310221 is 12201311.

11310221 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 11310221 - 2² = 11310217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11310223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65291 + ... + 65463.

It is an arithmetic number, because the mean of its divisors is an integer number (789264).

Almost surely, 2^11310221 is an apocalyptic number.

It is an amenable number.

11310221 is a deficient number, since it is larger than the sum of its proper divisors (1318003).

11310221 is a wasteful number, since it uses less digits than its factorization.

11310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 11310221 is about 3363.0672012316. The cubic root of 11310221 is about 224.4693403765.

Adding to 11310221 its reverse (12201311), we get a palindrome (23511532).

The spelling of 11310221 in words is "eleven million, three hundred ten thousand, two hundred twenty-one".