12821847912 has 64 divisors (see below), whose sum is σ = 35743161600. Its totient is φ = 4258719360.

The previous prime is 12821847839. The next prime is 12821847917. The reversal of 12821847912 is 21974812821.

It is not an unprimeable number, because it can be changed into a prime (12821847917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44928 + ... + 166319.

It is an arithmetic number, because the mean of its divisors is an integer number (558486900).

Almost surely, 2^12821847912 is an apocalyptic number.

12821847912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12821847912 is an abundant number, since it is smaller than the sum of its proper divisors (22921313688).

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

12821847912 is a wasteful number, since it uses less digits than its factorization.

12821847912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211543 (or 211533 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 12821847912 in words is "twelve billion, eight hundred twenty-one million, eight hundred forty-seven thousand, nine hundred twelve".