11609221 has 8 divisors (see below), whose sum is σ = 12905984. Its totient is φ = 10370160.

The previous prime is 11609203. The next prime is 11609303. The reversal of 11609221 is 12290611.

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

It is a cyclic number.

It is not a de Polignac number, because 11609221 - 2⁵ = 11609189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11609192 and 11609201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11609201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14001 + ... + 14806.

It is an arithmetic number, because the mean of its divisors is an integer number (1613248).

Almost surely, 2^11609221 is an apocalyptic number.

It is an amenable number.

11609221 is a deficient number, since it is larger than the sum of its proper divisors (1296763).

11609221 is a wasteful number, since it uses less digits than its factorization.

11609221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28851.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 11609221 is about 3407.2306936866. The cubic root of 11609221 is about 226.4302049147.

Adding to 11609221 its reverse (12290611), we get a palindrome (23899832).

The spelling of 11609221 in words is "eleven million, six hundred nine thousand, two hundred twenty-one".