13282221 has 8 divisors (see below), whose sum is σ = 17845344. Its totient is φ = 8786960.

The previous prime is 13282211. The next prime is 13282259. The reversal of 13282221 is 12228231.

It is a happy number.

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 13282221 - 2¹³ = 13274029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13282211) 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, 16506 + ... + 17291.

It is an arithmetic number, because the mean of its divisors is an integer number (2230668).

Almost surely, 2^13282221 is an apocalyptic number.

It is an amenable number.

13282221 is a deficient number, since it is larger than the sum of its proper divisors (4563123).

13282221 is a wasteful number, since it uses less digits than its factorization.

13282221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33931.

The product of its digits is 384, while the sum is 21.

The square root of 13282221 is about 3644.4781519444. The cubic root of 13282221 is about 236.8228304340.

The spelling of 13282221 in words is "thirteen million, two hundred eighty-two thousand, two hundred twenty-one".