12216201280 has 56 divisors (see below), whose sum is σ = 30092949720. Its totient is φ = 4717977600.

The previous prime is 12216201233. The next prime is 12216201313. The reversal of 12216201280 is 8210261221.

It can be written as a sum of positive squares in 4 ways, for example, as 2889277504 + 9326923776 = 53752^2 + 96576^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648921 + ... + 667480.

Almost surely, 2^12216201280 is an apocalyptic number.

12216201280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12216201280 is an abundant number, since it is smaller than the sum of its proper divisors (17876748440).

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

12216201280 is a wasteful number, since it uses less digits than its factorization.

12216201280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316447 (or 1316437 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The spelling of 12216201280 in words is "twelve billion, two hundred sixteen million, two hundred one thousand, two hundred eighty".