11608221 has 8 divisors (see below), whose sum is σ = 16292320. Its totient is φ = 7331472.

The previous prime is 11608217. The next prime is 11608249. The reversal of 11608221 is 12280611.

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

It is not a de Polignac number, because 11608221 - 2² = 11608217 is a prime.

It is a super-3 number, since 3×11608221³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11608321) 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, 101770 + ... + 101883.

It is an arithmetic number, because the mean of its divisors is an integer number (2036540).

Almost surely, 2^11608221 is an apocalyptic number.

It is an amenable number.

11608221 is a deficient number, since it is larger than the sum of its proper divisors (4684099).

11608221 is a wasteful number, since it uses less digits than its factorization.

11608221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203675.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 11608221 is about 3407.0839437854. The cubic root of 11608221 is about 226.4237032810.

Adding to 11608221 its reverse (12280611), we get a palindrome (23888832).

The spelling of 11608221 in words is "eleven million, six hundred eight thousand, two hundred twenty-one".