232221021 has 8 divisors (see below), whose sum is σ = 325924320. Its totient is φ = 146665872.

The previous prime is 232221013. The next prime is 232221061. The reversal of 232221021 is 120122232.

It is a happy number.

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

It is not a de Polignac number, because 232221021 - 2³ = 232221013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232221001) 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, 2036970 + ... + 2037083.

It is an arithmetic number, because the mean of its divisors is an integer number (40740540).

Almost surely, 2^232221021 is an apocalyptic number.

It is an amenable number.

232221021 is a deficient number, since it is larger than the sum of its proper divisors (93703299).

232221021 is a wasteful number, since it uses less digits than its factorization.

232221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074075.

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

The square root of 232221021 is about 15238.7998543192. The cubic root of 232221021 is about 614.6584315205.

Adding to 232221021 its reverse (120122232), we get a palindrome (352343253).

The spelling of 232221021 in words is "two hundred thirty-two million, two hundred twenty-one thousand, twenty-one".