12032021 has 4 divisors (see below), whose sum is σ = 12040032. Its totient is φ = 12024012.

The previous prime is 12032011. The next prime is 12032057. The reversal of 12032021 is 12023021.

It is a happy number.

12032021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12032021 - 2²² = 7837717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031993 and 12032011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032011) 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, 1001 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (3010008).

It is a Poulet number, since it divides 2^12032020-1.

Almost surely, 2^12032021 is an apocalyptic number.

12032021 is the 2003-rd octagonal number.

It is an amenable number.

12032021 is a deficient number, since it is larger than the sum of its proper divisors (8011).

12032021 is an equidigital number, since it uses as much as digits as its factorization.

12032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8010.

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

The square root of 12032021 is about 3468.7203692428. The cubic root of 12032021 is about 229.1463059523.

Adding to 12032021 its reverse (12023021), we get a palindrome (24055042).

The spelling of 12032021 in words is "twelve million, thirty-two thousand, twenty-one".