13354221 has 4 divisors (see below), whose sum is σ = 17805632. Its totient is φ = 8902812.

The previous prime is 13354219. The next prime is 13354261. The reversal of 13354221 is 12245331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13354221 - 2¹ = 13354219 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13354261) 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, 2225701 + ... + 2225706.

It is an arithmetic number, because the mean of its divisors is an integer number (4451408).

Almost surely, 2^13354221 is an apocalyptic number.

It is an amenable number.

13354221 is a deficient number, since it is larger than the sum of its proper divisors (4451411).

13354221 is an equidigital number, since it uses as much as digits as its factorization.

13354221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451410.

The product of its digits is 720, while the sum is 21.

The square root of 13354221 is about 3654.3427589650. The cubic root of 13354221 is about 237.2499810312.

Adding to 13354221 its reverse (12245331), we get a palindrome (25599552).

The spelling of 13354221 in words is "thirteen million, three hundred fifty-four thousand, two hundred twenty-one".