1310121000121 has 2 divisors, whose sum is σ = 1310121000122. Its totient is φ = 1310121000120.

The previous prime is 1310121000107. The next prime is 1310121000161. The reversal of 1310121000121 is 1210001210131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153830447225 + 156290552896 = 1074165^2 + 395336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310121000121 - 2⁹ = 1310120999609 is a prime.

It is not a weakly prime, because it can be changed into another prime (1310121000161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655060500060 + 655060500061.

It is an arithmetic number, because the mean of its divisors is an integer number (655060500061).

Almost surely, 2^{1310121000121} is an apocalyptic number.

It is an amenable number.

1310121000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310121000121 is an equidigital number, since it uses as much as digits as its factorization.

1310121000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1310121000121 its reverse (1210001210131), we get a palindrome (2520122210252).

The spelling of 1310121000121 in words is "one trillion, three hundred ten billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.