12147247132 has 12 divisors (see below), whose sum is σ = 21574961800. Its totient is φ = 5982972336.

The previous prime is 12147247129. The next prime is 12147247159. The reversal of 12147247132 is 23174274121.

It is a super-2 number, since 2×12147247132² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 22662507 + ... + 22663042.

Almost surely, 2^12147247132 is an apocalyptic number.

It is an amenable number.

12147247132 is a deficient number, since it is larger than the sum of its proper divisors (9427714668).

12147247132 is a wasteful number, since it uses less digits than its factorization.

12147247132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45325620 (or 45325618 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The spelling of 12147247132 in words is "twelve billion, one hundred forty-seven million, two hundred forty-seven thousand, one hundred thirty-two".