12641321 has 8 divisors (see below), whose sum is σ = 15760704. Its totient is φ = 9850320.

The previous prime is 12641311. The next prime is 12641323. The reversal of 12641321 is 12314621.

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 12641321 - 2⁶ = 12641257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12641293 and 12641302.

It is not an unprimeable number, because it can be changed into a prime (12641323) 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, 82010 + ... + 82163.

It is an arithmetic number, because the mean of its divisors is an integer number (1970088).

Almost surely, 2^12641321 is an apocalyptic number.

12641321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12641321 is a deficient number, since it is larger than the sum of its proper divisors (3119383).

12641321 is a wasteful number, since it uses less digits than its factorization.

12641321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164191.

The product of its digits is 288, while the sum is 20.

The square root of 12641321 is about 3555.4635422122. The cubic root of 12641321 is about 232.9507715260.

Adding to 12641321 its reverse (12314621), we get a palindrome (24955942).

The spelling of 12641321 in words is "twelve million, six hundred forty-one thousand, three hundred twenty-one".