214331221 has 8 divisors (see below), whose sum is σ = 236186720. Its totient is φ = 193242672.

The previous prime is 214331213. The next prime is 214331237. The reversal of 214331221 is 122133412.

It is a happy number.

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 214331221 - 2³ = 214331213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214331251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191151 + ... + 192268.

It is an arithmetic number, because the mean of its divisors is an integer number (29523340).

Almost surely, 2^214331221 is an apocalyptic number.

It is an amenable number.

214331221 is a deficient number, since it is larger than the sum of its proper divisors (21855499).

214331221 is a wasteful number, since it uses less digits than its factorization.

214331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383475.

The product of its digits is 288, while the sum is 19.

The square root of 214331221 is about 14640.0553619172. The cubic root of 214331221 is about 598.4508378628.

Adding to 214331221 its reverse (122133412), we get a palindrome (336464633).

The spelling of 214331221 in words is "two hundred fourteen million, three hundred thirty-one thousand, two hundred twenty-one".