5011123109 has 2 divisors, whose sum is σ = 5011123110. Its totient is φ = 5011123108.

The previous prime is 5011123097. The next prime is 5011123153. The reversal of 5011123109 is 9013211105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2992418209 + 2018704900 = 54703^2 + 44930^2 .

It is a cyclic number.

It is not a de Polignac number, because 5011123109 - 2⁴ = 5011123093 is a prime.

It is a super-2 number, since 2×5011123109² = 50222709627107651762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5011120109) 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, 2505561554 + 2505561555.

It is an arithmetic number, because the mean of its divisors is an integer number (2505561555).

Almost surely, 2^5011123109 is an apocalyptic number.

It is an amenable number.

5011123109 is a deficient number, since it is larger than the sum of its proper divisors (1).

5011123109 is an equidigital number, since it uses as much as digits as its factorization.

5011123109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 5011123109 is about 70789.2866823787. The cubic root of 5011123109 is about 1711.2430241408.

The spelling of 5011123109 in words is "five billion, eleven million, one hundred twenty-three thousand, one hundred nine".