270221 has 4 divisors (see below), whose sum is σ = 308832. Its totient is φ = 231612.

The previous prime is 270217. The next prime is 270223. The reversal of 270221 is 122072.

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 a cyclic number.

It is not a de Polignac number, because 270221 - 2² = 270217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 270196 and 270205.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 270221.

It is not an unprimeable number, because it can be changed into a prime (270223) 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, 19295 + ... + 19308.

It is an arithmetic number, because the mean of its divisors is an integer number (77208).

2²⁷⁰²²¹ is an apocalyptic number.

It is an amenable number.

270221 is a deficient number, since it is larger than the sum of its proper divisors (38611).

270221 is an equidigital number, since it uses as much as digits as its factorization.

270221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38610.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 270221 is about 519.8278561216. The cubic root of 270221 is about 64.6506703387.

Adding to 270221 its reverse (122072), we get a palindrome (392293).

The spelling of 270221 in words is "two hundred seventy thousand, two hundred twenty-one", and thus it is an iban number.