12082821 has 8 divisors (see below), whose sum is σ = 16666080. Its totient is φ = 7777392.

The previous prime is 12082817. The next prime is 12082859. The reversal of 12082821 is 12828021.

12082821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12082821 - 2² = 12082817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12082791 and 12082800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12082921) 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, 69355 + ... + 69528.

It is an arithmetic number, because the mean of its divisors is an integer number (2083260).

Almost surely, 2^12082821 is an apocalyptic number.

It is an amenable number.

12082821 is a deficient number, since it is larger than the sum of its proper divisors (4583259).

12082821 is a wasteful number, since it uses less digits than its factorization.

12082821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138915.

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 12082821 is about 3476.0352414784. The cubic root of 12082821 is about 229.4683435150.

The spelling of 12082821 in words is "twelve million, eighty-two thousand, eight hundred twenty-one".