12271551312 has 40 divisors (see below), whose sum is σ = 32299655904. Its totient is φ = 4013336704.

The previous prime is 12271551277. The next prime is 12271551323. The reversal of 12271551312 is 21315517221.

It is a self number, because there is not a number n which added to its sum of digits gives 12271551312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409318 + ... + 2414405.

Almost surely, 2^12271551312 is an apocalyptic number.

12271551312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12271551312 is an abundant number, since it is smaller than the sum of its proper divisors (20028104592).

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

12271551312 is a wasteful number, since it uses less digits than its factorization.

12271551312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823787 (or 4823781 counting only the distinct ones).

The product of its digits is 4200, while the sum is 30.

The spelling of 12271551312 in words is "twelve billion, two hundred seventy-one million, five hundred fifty-one thousand, three hundred twelve".