11606221 has 8 divisors (see below), whose sum is σ = 12686688. Its totient is φ = 10530000.

The previous prime is 11606159. The next prime is 11606233. The reversal of 11606221 is 12260611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11606221 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 (11606251) 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 7 ways as a sum of consecutive naturals, for example, 8271 + ... + 9571.

It is an arithmetic number, because the mean of its divisors is an integer number (1585836).

Almost surely, 2^11606221 is an apocalyptic number.

11606221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11606221 is a deficient number, since it is larger than the sum of its proper divisors (1080467).

11606221 is a wasteful number, since it uses less digits than its factorization.

11606221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11606221 is about 3406.7904250188. The cubic root of 11606221 is about 226.4106988934.

Adding to 11606221 its reverse (12260611), we get a palindrome (23866832).

It can be divided in two parts, 1160 and 6221, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 11606221 in words is "eleven million, six hundred six thousand, two hundred twenty-one".