13104221 has 4 divisors (see below), whose sum is σ = 14112252. Its totient is φ = 12096192.

The previous prime is 13104209. The next prime is 13104251. The reversal of 13104221 is 12240131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9060100 + 4044121 = 3010^2 + 2011^2 .

It is a cyclic number.

It is not a de Polignac number, because 13104221 - 2¹⁰ = 13103197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13104196 and 13104205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13104251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503996 + ... + 504021.

It is an arithmetic number, because the mean of its divisors is an integer number (3528063).

Almost surely, 2^13104221 is an apocalyptic number.

It is an amenable number.

13104221 is a deficient number, since it is larger than the sum of its proper divisors (1008031).

13104221 is a wasteful number, since it uses less digits than its factorization.

13104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008030.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 13104221 is about 3619.9752761587. The cubic root of 13104221 is about 235.7601520435.

Adding to 13104221 its reverse (12240131), we get a palindrome (25344352).

The spelling of 13104221 in words is "thirteen million, one hundred four thousand, two hundred twenty-one".