214424221 has 6 divisors (see below), whose sum is σ = 235689566. Its totient is φ = 194931000.

The previous prime is 214424201. The next prime is 214424227. The reversal of 214424221 is 122424412.

It can be written as a sum of positive squares in only one way, i.e., 195160900 + 19263321 = 13970^2 + 4389^2 .

It is not a de Polignac number, because 214424221 - 2¹⁵ = 214391453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214424192 and 214424201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214424227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 885930 + ... + 886171.

Almost surely, 2^214424221 is an apocalyptic number.

It is an amenable number.

214424221 is a deficient number, since it is larger than the sum of its proper divisors (21265345).

214424221 is a wasteful number, since it uses less digits than its factorization.

214424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772123 (or 1772112 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 214424221 is about 14643.2312349426. The cubic root of 214424221 is about 598.5373828526.

Adding to 214424221 its reverse (122424412), we get a palindrome (336848633).

The spelling of 214424221 in words is "two hundred fourteen million, four hundred twenty-four thousand, two hundred twenty-one".