214501321 has 8 divisors (see below), whose sum is σ = 221104520. Its totient is φ = 207940608.

The previous prime is 214501297. The next prime is 214501361. The reversal of 214501321 is 123105412.

It can be written as a sum of positive squares in 4 ways, for example, as 43414921 + 171086400 = 6589^2 + 13080^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 214501321 - 2¹¹ = 214499273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214501361) 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 7 ways as a sum of consecutive naturals, for example, 216 + ... + 20713.

It is an arithmetic number, because the mean of its divisors is an integer number (27638065).

Almost surely, 2^214501321 is an apocalyptic number.

It is an amenable number.

214501321 is a deficient number, since it is larger than the sum of its proper divisors (6603199).

214501321 is a wasteful number, since it uses less digits than its factorization.

214501321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21243.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 214501321 is about 14645.8636140038. The cubic root of 214501321 is about 598.6091124705.

Adding to 214501321 its reverse (123105412), we get a palindrome (337606733).

The spelling of 214501321 in words is "two hundred fourteen million, five hundred one thousand, three hundred twenty-one".