13452221 has 8 divisors (see below), whose sum is σ = 13753344. Its totient is φ = 13154400.

The previous prime is 13452211. The next prime is 13452319. The reversal of 13452221 is 12225431.

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 13452221 - 2¹⁰ = 13451197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13452193 and 13452202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13452211) 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, 8546 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (1719168).

Almost surely, 2^13452221 is an apocalyptic number.

It is an amenable number.

13452221 is a deficient number, since it is larger than the sum of its proper divisors (301123).

13452221 is a wasteful number, since it uses less digits than its factorization.

13452221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its digits is 480, while the sum is 20.

The square root of 13452221 is about 3667.7269527597. The cubic root of 13452221 is about 237.8289204358.

Adding to 13452221 its reverse (12225431), we get a palindrome (25677652).

The spelling of 13452221 in words is "thirteen million, four hundred fifty-two thousand, two hundred twenty-one".