12191882851 has 2 divisors, whose sum is σ = 12191882852. Its totient is φ = 12191882850.

The previous prime is 12191882821. The next prime is 12191882903. The reversal of 12191882851 is 15828819121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12191882851 - 2¹⁷ = 12191751779 is a prime.

It is not a weakly prime, because it can be changed into another prime (12191882821) 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 as a sum of consecutive naturals, namely, 6095941425 + 6095941426.

It is an arithmetic number, because the mean of its divisors is an integer number (6095941426).

Almost surely, 2^12191882851 is an apocalyptic number.

12191882851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12191882851 is an equidigital number, since it uses as much as digits as its factorization.

12191882851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 46.

The spelling of 12191882851 in words is "twelve billion, one hundred ninety-one million, eight hundred eighty-two thousand, eight hundred fifty-one".