12012243277 has 2 divisors, whose sum is σ = 12012243278. Its totient is φ = 12012243276.

The previous prime is 12012243241. The next prime is 12012243301. The reversal of 12012243277 is 77234221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11584001641 + 428241636 = 107629^2 + 20694^2 .

It is an emirp because it is prime and its reverse (77234221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12012243277 - 2²³ = 12003854669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012243077) 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, 6006121638 + 6006121639.

It is an arithmetic number, because the mean of its divisors is an integer number (6006121639).

Almost surely, 2^12012243277 is an apocalyptic number.

It is an amenable number.

12012243277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012243277 is an equidigital number, since it uses as much as digits as its factorization.

12012243277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

Adding to 12012243277 its reverse (77234221021), we get a palindrome (89246464298).

The spelling of 12012243277 in words is "twelve billion, twelve million, two hundred forty-three thousand, two hundred seventy-seven".