100100109999991 has 2 divisors, whose sum is σ = 100100109999992. Its totient is φ = 100100109999990.

The previous prime is 100100109999971. The next prime is 100100110000049. The reversal of 100100109999991 is 199999901001001.

It is a happy number.

It is an a-pointer prime, because the next prime (100100110000049) can be obtained adding 100100109999991 to its sum of digits (58).

It is a weak prime.

It is an emirp because it is prime and its reverse (199999901001001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100100109999991 - 2⁷ = 100100109999863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100100109999931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050054999995 + 50050054999996.

It is an arithmetic number, because the mean of its divisors is an integer number (50050054999996).

Almost surely, 2^{100100109999991} is an apocalyptic number.

100100109999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100100109999991 is an equidigital number, since it uses as much as digits as its factorization.

100100109999991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 531441, while the sum is 58.

The spelling of 100100109999991 in words is "one hundred trillion, one hundred billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-one".