12208621 has 8 divisors (see below), whose sum is σ = 12898080. Its totient is φ = 11523888.

The previous prime is 12208597. The next prime is 12208627. The reversal of 12208621 is 12680221.

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 12208621 - 2¹⁹ = 11684333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12208592 and 12208601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12208627) 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, 5010 + ... + 7036.

It is an arithmetic number, because the mean of its divisors is an integer number (1612260).

Almost surely, 2^12208621 is an apocalyptic number.

It is an amenable number.

12208621 is a deficient number, since it is larger than the sum of its proper divisors (689459).

12208621 is a wasteful number, since it uses less digits than its factorization.

12208621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 12208621 is about 3494.0837139370. The cubic root of 12208621 is about 230.2619636472.

Adding to 12208621 its reverse (12680221), we get a palindrome (24888842).

The spelling of 12208621 in words is "twelve million, two hundred eight thousand, six hundred twenty-one".