8232412821 has 4 divisors (see below), whose sum is σ = 10976550432. Its totient is φ = 5488275212.

The previous prime is 8232412817. The next prime is 8232412847. The reversal of 8232412821 is 1282142328.

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.

It is a cyclic number.

It is not a de Polignac number, because 8232412821 - 2² = 8232412817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8232412861) 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 3 ways as a sum of consecutive naturals, for example, 1372068801 + ... + 1372068806.

It is an arithmetic number, because the mean of its divisors is an integer number (2744137608).

Almost surely, 2^8232412821 is an apocalyptic number.

It is an amenable number.

8232412821 is a deficient number, since it is larger than the sum of its proper divisors (2744137611).

8232412821 is a wasteful number, since it uses less digits than its factorization.

8232412821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744137610.

The product of its digits is 12288, while the sum is 33.

The square root of 8232412821 is about 90732.6447371617. The cubic root of 8232412821 is about 2019.1831501853.

The spelling of 8232412821 in words is "eight billion, two hundred thirty-two million, four hundred twelve thousand, eight hundred twenty-one".