13454221 has 8 divisors (see below), whose sum is σ = 14918688. Its totient is φ = 12030000.

The previous prime is 13454213. The next prime is 13454237. The reversal of 13454221 is 12245431.

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 13454221 - 2³ = 13454213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13454192 and 13454201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13454201) 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, 9355 + ... + 10696.

It is an arithmetic number, because the mean of its divisors is an integer number (1864836).

Almost surely, 2^13454221 is an apocalyptic number.

13454221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13454221 is a deficient number, since it is larger than the sum of its proper divisors (1464467).

13454221 is a wasteful number, since it uses less digits than its factorization.

13454221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20123.

The product of its digits is 960, while the sum is 22.

The square root of 13454221 is about 3667.9995910578. Note that the first 3 decimals coincide. The cubic root of 13454221 is about 237.8407062039.

Adding to 13454221 its reverse (12245431), we get a palindrome (25699652).

The spelling of 13454221 in words is "thirteen million, four hundred fifty-four thousand, two hundred twenty-one".