8121244812 has 24 divisors (see below), whose sum is σ = 18980806656. Its totient is φ = 2702619408.

The previous prime is 8121244801. The next prime is 8121244819. The reversal of 8121244812 is 2184421218.

It is not an unprimeable number, because it can be changed into a prime (8121244819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550188 + ... + 564755.

It is an arithmetic number, because the mean of its divisors is an integer number (790866944).

Almost surely, 2^8121244812 is an apocalyptic number.

It is an amenable number.

8121244812 is an abundant number, since it is smaller than the sum of its proper divisors (10859561844).

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

8121244812 is a wasteful number, since it uses less digits than its factorization.

8121244812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115557 (or 1115555 counting only the distinct ones).

The product of its digits is 8192, while the sum is 33.

The square root of 8121244812 is about 90117.9494440480. The cubic root of 8121244812 is about 2010.0531170835.

The spelling of 8121244812 in words is "eight billion, one hundred twenty-one million, two hundred forty-four thousand, eight hundred twelve".