1312443142201 has 2 divisors, whose sum is σ = 1312443142202. Its totient is φ = 1312443142200.

The previous prime is 1312443142193. The next prime is 1312443142229. The reversal of 1312443142201 is 1022413442131.

It is a happy number.

It is an a-pointer prime, because the next prime (1312443142229) can be obtained adding 1312443142201 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265510252601 + 46932889600 = 1124949^2 + 216640^2 .

It is an emirp because it is prime and its reverse (1022413442131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312443142201 - 2³ = 1312443142193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312443142201.

It is not a weakly prime, because it can be changed into another prime (1312443142301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656221571100 + 656221571101.

It is an arithmetic number, because the mean of its divisors is an integer number (656221571101).

Almost surely, 2^{1312443142201} is an apocalyptic number.

It is an amenable number.

1312443142201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312443142201 is an equidigital number, since it uses as much as digits as its factorization.

1312443142201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1312443142201 its reverse (1022413442131), we get a palindrome (2334856584332).

The spelling of 1312443142201 in words is "one trillion, three hundred twelve billion, four hundred forty-three million, one hundred forty-two thousand, two hundred one".