214014221 has 2 divisors, whose sum is σ = 214014222. Its totient is φ = 214014220.

The previous prime is 214014217. The next prime is 214014247. The reversal of 214014221 is 122410412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213481321 + 532900 = 14611^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 214014221 - 2² = 214014217 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 214014221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214014721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107007110 + 107007111.

It is an arithmetic number, because the mean of its divisors is an integer number (107007111).

Almost surely, 2^214014221 is an apocalyptic number.

It is an amenable number.

214014221 is a deficient number, since it is larger than the sum of its proper divisors (1).

214014221 is an equidigital number, since it uses as much as digits as its factorization.

214014221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 214014221 is about 14629.2248940263. The cubic root of 214014221 is about 598.1556521850.

Adding to 214014221 its reverse (122410412), we get a palindrome (336424633).

It can be divided in two parts, 2140 and 14221, that added together give a palindrome (16361).

The spelling of 214014221 in words is "two hundred fourteen million, fourteen thousand, two hundred twenty-one".