12821052 has 24 divisors (see below), whose sum is σ = 30612736. Its totient is φ = 4174128.

The previous prime is 12821047. The next prime is 12821059. The reversal of 12821052 is 25012821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12821059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11908 + ... + 12939.

Almost surely, 2^12821052 is an apocalyptic number.

12821052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12821052 is an abundant number, since it is smaller than the sum of its proper divisors (17791684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12821052 is a wasteful number, since it uses less digits than its factorization.

12821052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24897 (or 24895 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12821052 is about 3580.6496617234. The cubic root of 12821052 is about 234.0495913595.

Adding to 12821052 its reverse (25012821), we get a palindrome (37833873).

The spelling of 12821052 in words is "twelve million, eight hundred twenty-one thousand, fifty-two".