232021021 has 4 divisors (see below), whose sum is σ = 232125372. Its totient is φ = 231916672.

The previous prime is 232021007. The next prime is 232021051. The reversal of 232021021 is 120120232.

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 204089796 + 27931225 = 14286^2 + 5285^2 .

It is a cyclic number.

It is not a de Polignac number, because 232021021 - 2¹⁷ = 231889949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232020992 and 232021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232021001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48766 + ... + 53311.

It is an arithmetic number, because the mean of its divisors is an integer number (58031343).

Almost surely, 2^232021021 is an apocalyptic number.

It is an amenable number.

232021021 is a deficient number, since it is larger than the sum of its proper divisors (104351).

232021021 is a wasteful number, since it uses less digits than its factorization.

232021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104350.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 232021021 is about 15232.2362442289. The cubic root of 232021021 is about 614.4819229594.

Adding to 232021021 its reverse (120120232), we get a palindrome (352141253).

The spelling of 232021021 in words is "two hundred thirty-two million, twenty-one thousand, twenty-one".