12208555 has 8 divisors (see below), whose sum is σ = 14670432. Its totient is φ = 9753408.

The previous prime is 12208549. The next prime is 12208571. The reversal of 12208555 is 55580221.

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 12208555 - 2¹¹ = 12206507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4167 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (1833804).

Almost surely, 2^12208555 is an apocalyptic number.

12208555 is a deficient number, since it is larger than the sum of its proper divisors (2461877).

12208555 is a wasteful number, since it uses less digits than its factorization.

12208555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 12208555 is about 3494.0742693881. The cubic root of 12208555 is about 230.2615487131.

Adding to 12208555 its reverse (55580221), we get a palindrome (67788776).

The spelling of 12208555 in words is "twelve million, two hundred eight thousand, five hundred fifty-five".