12011200261 has 2 divisors, whose sum is σ = 12011200262. Its totient is φ = 12011200260.

The previous prime is 12011200259. The next prime is 12011200283. The reversal of 12011200261 is 16200211021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11906956161 + 104244100 = 109119^2 + 10210^2 .

It is an emirp because it is prime and its reverse (16200211021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12011200261 - 2¹ = 12011200259 is a prime.

Together with 12011200259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011203261) 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, 6005600130 + 6005600131.

It is an arithmetic number, because the mean of its divisors is an integer number (6005600131).

Almost surely, 2^12011200261 is an apocalyptic number.

It is an amenable number.

12011200261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011200261 is an equidigital number, since it uses as much as digits as its factorization.

12011200261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12011200261 its reverse (16200211021), we get a palindrome (28211411282).

The spelling of 12011200261 in words is "twelve billion, eleven million, two hundred thousand, two hundred sixty-one".