12147247105 has 32 divisors (see below), whose sum is σ = 17674076160. Its totient is φ = 7828954560.

The previous prime is 12147247097. The next prime is 12147247109. The reversal of 12147247105 is 50174274121.

It is not a de Polignac number, because 12147247105 - 2³ = 12147247097 is a prime.

It is a super-2 number, since 2×12147247105² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12147247109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12540 + ... + 156370.

It is an arithmetic number, because the mean of its divisors is an integer number (552314880).

Almost surely, 2^12147247105 is an apocalyptic number.

It is an amenable number.

12147247105 is a deficient number, since it is larger than the sum of its proper divisors (5526829055).

12147247105 is a wasteful number, since it uses less digits than its factorization.

12147247105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143989.

The product of its (nonzero) digits is 15680, while the sum is 34.

The spelling of 12147247105 in words is "twelve billion, one hundred forty-seven million, two hundred forty-seven thousand, one hundred five".