100910100191 has 2 divisors, whose sum is σ = 100910100192. Its totient is φ = 100910100190.

The previous prime is 100910100143. The next prime is 100910100197. The reversal of 100910100191 is 191001019001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100910100191 - 2⁶ = 100910100127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100910100197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50455050095 + 50455050096.

It is an arithmetic number, because the mean of its divisors is an integer number (50455050096).

Almost surely, 2^100910100191 is an apocalyptic number.

100910100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100910100191 is an equidigital number, since it uses as much as digits as its factorization.

100910100191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

Adding to 100910100191 its reverse (191001019001), we get a palindrome (291911119192).

The spelling of 100910100191 in words is "one hundred billion, nine hundred ten million, one hundred thousand, one hundred ninety-one".