12444200244181 has 2 divisors, whose sum is σ = 12444200244182. Its totient is φ = 12444200244180.

The previous prime is 12444200244169. The next prime is 12444200244227. The reversal of 12444200244181 is 18144200244421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11333355915025 + 1110844329156 = 3366505^2 + 1053966^2 .

It is a cyclic number.

It is not a de Polignac number, because 12444200244181 - 2⁷ = 12444200244053 is a prime.

It is a super-2 number, since 2×12444200244181² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12444200244181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12444200244481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6222100122090 + 6222100122091.

It is an arithmetic number, because the mean of its divisors is an integer number (6222100122091).

Almost surely, 2^{12444200244181} is an apocalyptic number.

It is an amenable number.

12444200244181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12444200244181 is an equidigital number, since it uses as much as digits as its factorization.

12444200244181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65536, while the sum is 37.

The spelling of 12444200244181 in words is "twelve trillion, four hundred forty-four billion, two hundred million, two hundred forty-four thousand, one hundred eighty-one".