214223221 has 2 divisors, whose sum is σ = 214223222. Its totient is φ = 214223220.

The previous prime is 214223197. The next prime is 214223263. The reversal of 214223221 is 122322412.

214223221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196700625 + 17522596 = 14025^2 + 4186^2 .

It is a cyclic number.

It is not a de Polignac number, because 214223221 - 2¹⁷ = 214092149 is a prime.

It is a super-2 number, since 2×214223221² = 91783176831229682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214223621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107111610 + 107111611.

It is an arithmetic number, because the mean of its divisors is an integer number (107111611).

Almost surely, 2^214223221 is an apocalyptic number.

It is an amenable number.

214223221 is a deficient number, since it is larger than the sum of its proper divisors (1).

214223221 is an equidigital number, since it uses as much as digits as its factorization.

214223221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 214223221 is about 14636.3663865045. The cubic root of 214223221 is about 598.3503025804.

Adding to 214223221 its reverse (122322412), we get a palindrome (336545633).

The spelling of 214223221 in words is "two hundred fourteen million, two hundred twenty-three thousand, two hundred twenty-one".