5121110191 has 2 divisors, whose sum is σ = 5121110192. Its totient is φ = 5121110190.

The previous prime is 5121110173. The next prime is 5121110221. The reversal of 5121110191 is 1910111215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5121110191 - 2⁷ = 5121110063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5121110101) 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, 2560555095 + 2560555096.

It is an arithmetic number, because the mean of its divisors is an integer number (2560555096).

Almost surely, 2^5121110191 is an apocalyptic number.

5121110191 is a deficient number, since it is larger than the sum of its proper divisors (1).

5121110191 is an equidigital number, since it uses as much as digits as its factorization.

5121110191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 22.

The square root of 5121110191 is about 71561.9325549555. The cubic root of 5121110191 is about 1723.6723177102.

The spelling of 5121110191 in words is "five billion, one hundred twenty-one million, one hundred ten thousand, one hundred ninety-one".