214221 has 12 divisors (see below), whose sum is σ = 329696. Its totient is φ = 121200.

The previous prime is 214219. The next prime is 214237. The reversal of 214221 is 122412.

214221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214221 - 2¹ = 214219 is a prime.

It is a hoax number, since the sum of its digits (12) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 214197 and 214206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2071 + ... + 2171.

2²¹⁴²²¹ is an apocalyptic number.

214221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

214221 is a deficient number, since it is larger than the sum of its proper divisors (115475).

214221 is an equidigital number, since it uses as much as digits as its factorization.

214221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 111 counting only the distinct ones).

The product of its digits is 32, while the sum is 12.

The square root of 214221 is about 462.8401451905. The cubic root of 214221 is about 59.8348234736.

Adding to 214221 its reverse (122412), we get a palindrome (336633).

Subtracting from 214221 its reverse (122412), we obtain a square (91809 = 303²).

It can be divided in two parts, 214 and 221, that added together give a triangular number (435 = T₂₉).

The spelling of 214221 in words is "two hundred fourteen thousand, two hundred twenty-one", and thus it is an iban number.