1000100010191 has 2 divisors, whose sum is σ = 1000100010192. Its totient is φ = 1000100010190.

The previous prime is 1000100010157. The next prime is 1000100010209. The reversal of 1000100010191 is 1910100010001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000100010191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000100010101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500050005095 + 500050005096.

It is an arithmetic number, because the mean of its divisors is an integer number (500050005096).

Almost surely, 2^{1000100010191} is an apocalyptic number.

1000100010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000100010191 is an equidigital number, since it uses as much as digits as its factorization.

1000100010191 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 1000100010191 its reverse (1910100010001), we get a palindrome (2910200020192).

The spelling of 1000100010191 in words is "one trillion, one hundred million, ten thousand, one hundred ninety-one".