271801221218 has 6 divisors (see below), whose sum is σ = 407702937771. Its totient is φ = 135900241962.

The previous prime is 271801221179. The next prime is 271801221253. The reversal of 271801221218 is 812122108172.

It can be written as a sum of positive squares in only one way, i.e., 135900610609 + 135900610609 = 368647^2 + 368647^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=368647.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 552971 + ... + 921617.

Almost surely, 2^271801221218 is an apocalyptic number.

271801221218 is a deficient number, since it is larger than the sum of its proper divisors (135901716553).

271801221218 is an frugal number, since it uses more digits than its factorization.

271801221218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737296 (or 368649 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The spelling of 271801221218 in words is "two hundred seventy-one billion, eight hundred one million, two hundred twenty-one thousand, two hundred eighteen".