12182830821 has 24 divisors (see below), whose sum is σ = 20579049920. Its totient is φ = 6799718016.

The previous prime is 12182830817. The next prime is 12182830823. The reversal of 12182830821 is 12803828121.

It is not a de Polignac number, because 12182830821 - 2² = 12182830817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12182830823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2245876 + ... + 2251293.

Almost surely, 2^12182830821 is an apocalyptic number.

It is an amenable number.

12182830821 is a deficient number, since it is larger than the sum of its proper divisors (8396219099).

12182830821 is a wasteful number, since it uses less digits than its factorization.

12182830821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497225 (or 4497222 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The spelling of 12182830821 in words is "twelve billion, one hundred eighty-two million, eight hundred thirty thousand, eight hundred twenty-one".