214003221 has 4 divisors (see below), whose sum is σ = 285337632. Its totient is φ = 142668812.

The previous prime is 214003211. The next prime is 214003291. The reversal of 214003221 is 122300412.

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 214003221 - 2¹⁵ = 213970453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 214003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214003211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35667201 + ... + 35667206.

It is an arithmetic number, because the mean of its divisors is an integer number (71334408).

Almost surely, 2^214003221 is an apocalyptic number.

It is an amenable number.

214003221 is a deficient number, since it is larger than the sum of its proper divisors (71334411).

214003221 is an equidigital number, since it uses as much as digits as its factorization.

214003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71334410.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 214003221 is about 14628.8489294271. The cubic root of 214003221 is about 598.1454039176.

Adding to 214003221 its reverse (122300412), we get a palindrome (336303633).

The spelling of 214003221 in words is "two hundred fourteen million, three thousand, two hundred twenty-one".