12820501216 has 12 divisors (see below), whose sum is σ = 25240361832. Its totient is φ = 6410250592.

The previous prime is 12820501207. The next prime is 12820501247. The reversal of 12820501216 is 61210502821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200320300 + ... + 200320363.

It is an arithmetic number, because the mean of its divisors is an integer number (2103363486).

Almost surely, 2^12820501216 is an apocalyptic number.

12820501216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12820501216 is a deficient number, since it is larger than the sum of its proper divisors (12419860616).

12820501216 is an equidigital number, since it uses as much as digits as its factorization.

12820501216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400640673 (or 400640665 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The spelling of 12820501216 in words is "twelve billion, eight hundred twenty million, five hundred one thousand, two hundred sixteen".