12283821 has 24 divisors (see below), whose sum is σ = 19528704. Its totient is φ = 7378560.

The previous prime is 12283819. The next prime is 12283841. The reversal of 12283821 is 12838221.

It is not a de Polignac number, because 12283821 - 2¹ = 12283819 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12283811) 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 23 ways as a sum of consecutive naturals, for example, 12085 + ... + 13061.

It is an arithmetic number, because the mean of its divisors is an integer number (813696).

Almost surely, 2^12283821 is an apocalyptic number.

12283821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12283821 is a deficient number, since it is larger than the sum of its proper divisors (7244883).

12283821 is a wasteful number, since it uses less digits than its factorization.

12283821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 1118 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12283821 is about 3504.8282411553. The cubic root of 12283821 is about 230.7337687304.

It can be divided in two parts, 1 and 2283821, that added together give a palindrome (2283822).

The spelling of 12283821 in words is "twelve million, two hundred eighty-three thousand, eight hundred twenty-one".