12201221201231 has 2 divisors, whose sum is σ = 12201221201232. Its totient is φ = 12201221201230.

The previous prime is 12201221201201. The next prime is 12201221201251. The reversal of 12201221201231 is 13210212210221.

It is an a-pointer prime, because the next prime (12201221201251) can be obtained adding 12201221201231 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12201221201231 - 2¹⁸ = 12201220939087 is a prime.

It is a super-2 number, since 2×12201221201231² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201221201201) 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, 6100610600615 + 6100610600616.

It is an arithmetic number, because the mean of its divisors is an integer number (6100610600616).

Almost surely, 2^{12201221201231} is an apocalyptic number.

12201221201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201221201231 is an equidigital number, since it uses as much as digits as its factorization.

12201221201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 12201221201231 its reverse (13210212210221), we get a palindrome (25411433411452).

The spelling of 12201221201231 in words is "twelve trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, two hundred thirty-one".