12001201231 has 2 divisors, whose sum is σ = 12001201232. Its totient is φ = 12001201230.

The previous prime is 12001201189. The next prime is 12001201271. The reversal of 12001201231 is 13210210021.

It is a strong prime.

It is an emirp because it is prime and its reverse (13210210021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12001201231 - 2¹¹ = 12001199183 is a prime.

It is a super-2 number, since 2×12001201231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001201271) 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, 6000600615 + 6000600616.

It is an arithmetic number, because the mean of its divisors is an integer number (6000600616).

Almost surely, 2^12001201231 is an apocalyptic number.

12001201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001201231 is an equidigital number, since it uses as much as digits as its factorization.

12001201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12001201231 its reverse (13210210021), we get a palindrome (25211411252).

The spelling of 12001201231 in words is "twelve billion, one million, two hundred one thousand, two hundred thirty-one".