12847791121 has 16 divisors (see below), whose sum is σ = 14088729600. Its totient is φ = 11619176400.

The previous prime is 12847791101. The next prime is 12847791133. The reversal of 12847791121 is 12119774821.

It is a cyclic number.

It is not a de Polignac number, because 12847791121 - 2³³ = 4257856529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12847791101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729906 + ... + 1737316.

It is an arithmetic number, because the mean of its divisors is an integer number (880545600).

Almost surely, 2^12847791121 is an apocalyptic number.

12847791121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12847791121 is a deficient number, since it is larger than the sum of its proper divisors (1240938479).

12847791121 is a wasteful number, since it uses less digits than its factorization.

12847791121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220.

The product of its digits is 56448, while the sum is 43.

The spelling of 12847791121 in words is "twelve billion, eight hundred forty-seven million, seven hundred ninety-one thousand, one hundred twenty-one".