100010191 has 2 divisors, whose sum is σ = 100010192. Its totient is φ = 100010190.

The previous prime is 100010189. The next prime is 100010203. The reversal of 100010191 is 191010001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100010191 - 2¹ = 100010189 is a prime.

Together with 100010189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100010161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005095 + 50005096.

It is an arithmetic number, because the mean of its divisors is an integer number (50005096).

Almost surely, 2^100010191 is an apocalyptic number.

100010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100010191 is an equidigital number, since it uses as much as digits as its factorization.

100010191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 100010191 is about 10000.5095370186. The cubic root of 100010191 is about 464.1746503030.

Adding to 100010191 its reverse (191010001), we get a palindrome (291020192).

The spelling of 100010191 in words is "one hundred million, ten thousand, one hundred ninety-one".