232001021 has 4 divisors (see below), whose sum is σ = 265144032. Its totient is φ = 198858012.

The previous prime is 232001009. The next prime is 232001027. The reversal of 232001021 is 120100232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232001021 - 2¹⁰ = 231999997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232000993 and 232001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232001027) 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, 16571495 + ... + 16571508.

It is an arithmetic number, because the mean of its divisors is an integer number (66286008).

Almost surely, 2^232001021 is an apocalyptic number.

It is an amenable number.

232001021 is a deficient number, since it is larger than the sum of its proper divisors (33143011).

232001021 is an equidigital number, since it uses as much as digits as its factorization.

232001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33143010.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 232001021 is about 15231.5797276579. The cubic root of 232001021 is about 614.4642665254.

Adding to 232001021 its reverse (120100232), we get a palindrome (352101253).

The spelling of 232001021 in words is "two hundred thirty-two million, one thousand, twenty-one".