10100100191 has 2 divisors, whose sum is σ = 10100100192. Its totient is φ = 10100100190.

The previous prime is 10100100181. The next prime is 10100100223. The reversal of 10100100191 is 19100100101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100100191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10100100181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050050095 + 5050050096.

It is an arithmetic number, because the mean of its divisors is an integer number (5050050096).

Almost surely, 2^10100100191 is an apocalyptic number.

10100100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

10100100191 is an equidigital number, since it uses as much as digits as its factorization.

10100100191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 10100100191 its reverse (19100100101), we get a palindrome (29200200292).

The spelling of 10100100191 in words is "ten billion, one hundred million, one hundred thousand, one hundred ninety-one".