5118127121 has 2 divisors, whose sum is σ = 5118127122. Its totient is φ = 5118127120.

The previous prime is 5118127093. The next prime is 5118127123. The reversal of 5118127121 is 1217218115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3637416721 + 1480710400 = 60311^2 + 38480^2 .

It is a cyclic number.

It is not a de Polignac number, because 5118127121 - 2⁶ = 5118127057 is a prime.

Together with 5118127123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5118127123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559063560 + 2559063561.

It is an arithmetic number, because the mean of its divisors is an integer number (2559063561).

Almost surely, 2^5118127121 is an apocalyptic number.

It is an amenable number.

5118127121 is a deficient number, since it is larger than the sum of its proper divisors (1).

5118127121 is an equidigital number, since it uses as much as digits as its factorization.

5118127121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 29.

The square root of 5118127121 is about 71541.0869430986. The cubic root of 5118127121 is about 1723.3375703805.

The spelling of 5118127121 in words is "five billion, one hundred eighteen million, one hundred twenty-seven thousand, one hundred twenty-one".