11413221 has 16 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 7238000.

The previous prime is 11413217. The next prime is 11413253. The reversal of 11413221 is 12231411.

It is a cyclic number.

It is not a de Polignac number, because 11413221 - 2² = 11413217 is a prime.

It is a super-2 number, since 2×11413221² = 260523227189682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11413221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11413261) 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, 16990 + ... + 17648.

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

Almost surely, 2^11413221 is an apocalyptic number.

It is an amenable number.

11413221 is a deficient number, since it is larger than the sum of its proper divisors (4553499).

11413221 is a wasteful number, since it uses less digits than its factorization.

11413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its digits is 48, while the sum is 15.

The square root of 11413221 is about 3378.3458970330. The cubic root of 11413221 is about 225.1486819749.

Adding to 11413221 its reverse (12231411), we get a palindrome (23644632).

The spelling of 11413221 in words is "eleven million, four hundred thirteen thousand, two hundred twenty-one".