12201112009991 has 2 divisors, whose sum is σ = 12201112009992. Its totient is φ = 12201112009990.

The previous prime is 12201112009969. The next prime is 12201112010023. The reversal of 12201112009991 is 19990021110221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12201112009991 - 2⁶ = 12201112009927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201112009901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100556004995 + 6100556004996.

It is an arithmetic number, because the mean of its divisors is an integer number (6100556004996).

Almost surely, 2^{12201112009991} is an apocalyptic number.

12201112009991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201112009991 is an equidigital number, since it uses as much as digits as its factorization.

12201112009991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 12201112009991 in words is "twelve trillion, two hundred one billion, one hundred twelve million, nine thousand, nine hundred ninety-one".