13141221 has 8 divisors (see below), whose sum is σ = 18552384. Its totient is φ = 8245440.

The previous prime is 13141207. The next prime is 13141231. The reversal of 13141221 is 12214131.

13141221 is nontrivially palindromic in base 13.

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

It is not a de Polignac number, because 13141221 - 2⁵ = 13141189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13141221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13141201) 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, 128785 + ... + 128886.

It is an arithmetic number, because the mean of its divisors is an integer number (2319048).

Almost surely, 2^13141221 is an apocalyptic number.

It is an amenable number.

13141221 is a deficient number, since it is larger than the sum of its proper divisors (5411163).

13141221 is a wasteful number, since it uses less digits than its factorization.

13141221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257691.

The product of its digits is 48, while the sum is 15.

The square root of 13141221 is about 3625.0822059644. The cubic root of 13141221 is about 235.9818345206.

Adding to 13141221 its reverse (12214131), we get a palindrome (25355352).

The spelling of 13141221 in words is "thirteen million, one hundred forty-one thousand, two hundred twenty-one".