232232221 has 4 divisors (see below), whose sum is σ = 250096252. Its totient is φ = 214368192.

The previous prime is 232232197. The next prime is 232232227. The reversal of 232232221 is 122232232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97416900 + 134815321 = 9870^2 + 11611^2 .

It is a cyclic number.

It is not a de Polignac number, because 232232221 - 2⁹ = 232231709 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 (232232227) 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 3 ways as a sum of consecutive naturals, for example, 8931996 + ... + 8932021.

It is an arithmetic number, because the mean of its divisors is an integer number (62524063).

Almost surely, 2^232232221 is an apocalyptic number.

It is an amenable number.

232232221 is a deficient number, since it is larger than the sum of its proper divisors (17864031).

232232221 is a wasteful number, since it uses less digits than its factorization.

232232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17864030.

The product of its digits is 576, while the sum is 19.

The square root of 232232221 is about 15239.1673328958. The cubic root of 232232221 is about 614.6683130028.

Adding to 232232221 its reverse (122232232), we get a palindrome (354464453).

It can be divided in two parts, 2322 and 32221, that added together give a palindrome (34543).

The spelling of 232232221 in words is "two hundred thirty-two million, two hundred thirty-two thousand, two hundred twenty-one".