12201212209997 has 2 divisors, whose sum is σ = 12201212209998. Its totient is φ = 12201212209996.

The previous prime is 12201212209937. The next prime is 12201212210023. The reversal of 12201212209997 is 79990221210221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12195838000516 + 5374209481 = 3492254^2 + 73309^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201212209997 - 2¹⁰ = 12201212208973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201212209937) 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, 6100606104998 + 6100606104999.

It is an arithmetic number, because the mean of its divisors is an integer number (6100606104999).

Almost surely, 2^{12201212209997} is an apocalyptic number.

It is an amenable number.

12201212209997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201212209997 is an equidigital number, since it uses as much as digits as its factorization.

12201212209997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The spelling of 12201212209997 in words is "twelve trillion, two hundred one billion, two hundred twelve million, two hundred nine thousand, nine hundred ninety-seven".