232010021 has 4 divisors (see below), whose sum is σ = 237668844. Its totient is φ = 226351200.

The previous prime is 232010011. The next prime is 232010027. The reversal of 232010021 is 120010232.

It is a happy number.

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 9672100 + 222337921 = 3110^2 + 14911^2 .

It is a cyclic number.

It is not a de Polignac number, because 232010021 - 2⁶ = 232009957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232009984 and 232010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232010027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2829350 + ... + 2829431.

It is an arithmetic number, because the mean of its divisors is an integer number (59417211).

Almost surely, 2^232010021 is an apocalyptic number.

It is an amenable number.

232010021 is a deficient number, since it is larger than the sum of its proper divisors (5658823).

232010021 is an equidigital number, since it uses as much as digits as its factorization.

232010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658822.

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

The square root of 232010021 is about 15231.8751636166. The cubic root of 232010021 is about 614.4722120463.

Adding to 232010021 its reverse (120010232), we get a palindrome (352020253).

The spelling of 232010021 in words is "two hundred thirty-two million, ten thousand, twenty-one".