13355221 has 8 divisors (see below), whose sum is σ = 14645664. Its totient is φ = 12077520.

The previous prime is 13355213. The next prime is 13355227. The reversal of 13355221 is 12255331.

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 13355221 - 2³ = 13355213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13355192 and 13355201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13355227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915 + ... + 5248.

It is an arithmetic number, because the mean of its divisors is an integer number (1830708).

Almost surely, 2^13355221 is an apocalyptic number.

13355221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13355221 is a deficient number, since it is larger than the sum of its proper divisors (1290443).

13355221 is a wasteful number, since it uses less digits than its factorization.

13355221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6371.

The product of its digits is 900, while the sum is 22.

The square root of 13355221 is about 3654.4795799128. The cubic root of 13355221 is about 237.2559028557.

It can be divided in two parts, 1335 and 5221, that added together give a palindrome (6556).

The spelling of 13355221 in words is "thirteen million, three hundred fifty-five thousand, two hundred twenty-one".