232210221 has 32 divisors (see below), whose sum is σ = 330739200. Its totient is φ = 144668160.

The previous prime is 232210213. The next prime is 232210247. The reversal of 232210221 is 122012232.

It is a happy number.

It is not a de Polignac number, because 232210221 - 2³ = 232210213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 232210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232210421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 445441 + ... + 445961.

It is an arithmetic number, because the mean of its divisors is an integer number (10335600).

Almost surely, 2^232210221 is an apocalyptic number.

It is an amenable number.

232210221 is a deficient number, since it is larger than the sum of its proper divisors (98528979).

232210221 is a wasteful number, since it uses less digits than its factorization.

232210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 232210221 is about 15238.4454915848. The cubic root of 232210221 is about 614.6489026473.

Adding to 232210221 its reverse (122012232), we get a palindrome (354222453).

The spelling of 232210221 in words is "two hundred thirty-two million, two hundred ten thousand, two hundred twenty-one".