12203196557891 has 2 divisors, whose sum is σ = 12203196557892. Its totient is φ = 12203196557890.

The previous prime is 12203196557869. The next prime is 12203196557921. The reversal of 12203196557891 is 19875569130221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12203196557891 - 2³⁰ = 12202122816067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12203196557891.

It is not a weakly prime, because it can be changed into another prime (12203196550891) 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, 6101598278945 + 6101598278946.

It is an arithmetic number, because the mean of its divisors is an integer number (6101598278946).

Almost surely, 2^{12203196557891} is an apocalyptic number.

12203196557891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12203196557891 is an equidigital number, since it uses as much as digits as its factorization.

12203196557891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 12203196557891 in words is "twelve trillion, two hundred three billion, one hundred ninety-six million, five hundred fifty-seven thousand, eight hundred ninety-one".