12091208851 has 2 divisors, whose sum is σ = 12091208852. Its totient is φ = 12091208850.

The previous prime is 12091208849. The next prime is 12091208891. The reversal of 12091208851 is 15880219021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12091208851 - 2¹ = 12091208849 is a prime.

Together with 12091208849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12091208851.

It is not a weakly prime, because it can be changed into another prime (12091208821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045604425 + 6045604426.

It is an arithmetic number, because the mean of its divisors is an integer number (6045604426).

Almost surely, 2^12091208851 is an apocalyptic number.

12091208851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12091208851 is an equidigital number, since it uses as much as digits as its factorization.

12091208851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 12091208851 in words is "twelve billion, ninety-one million, two hundred eight thousand, eight hundred fifty-one".