5111111101 has 2 divisors, whose sum is σ = 5111111102. Its totient is φ = 5111111100.

The previous prime is 5111111087. The next prime is 5111111141. The reversal of 5111111101 is 1011111115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3965220900 + 1145890201 = 62970^2 + 33851^2 .

It is a cyclic number.

It is not a de Polignac number, because 5111111101 - 2⁷ = 5111110973 is a prime.

It is a super-2 number, since 2×5111111101² = 52246913373530864402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5111111141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555555550 + 2555555551.

It is an arithmetic number, because the mean of its divisors is an integer number (2555555551).

Almost surely, 2^5111111101 is an apocalyptic number.

It is an amenable number.

5111111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5111111101 is an equidigital number, since it uses as much as digits as its factorization.

5111111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5, while the sum is 13.

The square root of 5111111101 is about 71492.0352277091. The cubic root of 5111111101 is about 1722.5497496520.

Adding to 5111111101 its reverse (1011111115), we get a palindrome (6122222216).

The spelling of 5111111101 in words is "five billion, one hundred eleven million, one hundred eleven thousand, one hundred one".