10120243121 has 2 divisors, whose sum is σ = 10120243122. Its totient is φ = 10120243120.

The previous prime is 10120243093. The next prime is 10120243183. The reversal of 10120243121 is 12134202101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10112514721 + 7728400 = 100561^2 + 2780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10120243121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10120243121.

It is not a weakly prime, because it can be changed into another prime (10120243421) 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, 5060121560 + 5060121561.

It is an arithmetic number, because the mean of its divisors is an integer number (5060121561).

Almost surely, 2^10120243121 is an apocalyptic number.

It is an amenable number.

10120243121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120243121 is an equidigital number, since it uses as much as digits as its factorization.

10120243121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 10120243121 its reverse (12134202101), we get a palindrome (22254445222).

The spelling of 10120243121 in words is "ten billion, one hundred twenty million, two hundred forty-three thousand, one hundred twenty-one".