1312221200201 has 2 divisors, whose sum is σ = 1312221200202. Its totient is φ = 1312221200200.

The previous prime is 1312221200179. The next prime is 1312221200291. The reversal of 1312221200201 is 1020021222131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270410765625 + 41810434576 = 1127125^2 + 204476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312221200201 - 2²⁶ = 1312154091337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312221200201.

It is not a weakly prime, because it can be changed into another prime (1312221200291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656110600100 + 656110600101.

It is an arithmetic number, because the mean of its divisors is an integer number (656110600101).

Almost surely, 2^{1312221200201} is an apocalyptic number.

It is an amenable number.

1312221200201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312221200201 is an equidigital number, since it uses as much as digits as its factorization.

1312221200201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1312221200201 its reverse (1020021222131), we get a palindrome (2332242422332).

The spelling of 1312221200201 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, two hundred thousand, two hundred one".