214693221 has 16 divisors (see below), whose sum is σ = 308069568. Its totient is φ = 132499200.

The previous prime is 214693211. The next prime is 214693243. The reversal of 214693221 is 122396412.

It is not a de Polignac number, because 214693221 - 2¹¹ = 214691173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214693211) 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 15 ways as a sum of consecutive naturals, for example, 31395 + ... + 37616.

It is an arithmetic number, because the mean of its divisors is an integer number (19254348).

Almost surely, 2^214693221 is an apocalyptic number.

It is an amenable number.

214693221 is a deficient number, since it is larger than the sum of its proper divisors (93376347).

214693221 is a wasteful number, since it uses less digits than its factorization.

214693221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69092.

The product of its digits is 5184, while the sum is 30.

The square root of 214693221 is about 14652.4134872041. The cubic root of 214693221 is about 598.7875711217.

The spelling of 214693221 in words is "two hundred fourteen million, six hundred ninety-three thousand, two hundred twenty-one".