100001102109991 has 2 divisors, whose sum is σ = 100001102109992. Its totient is φ = 100001102109990.

The previous prime is 100001102109977. The next prime is 100001102110037. The reversal of 100001102109991 is 199901201100001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100001102109991 - 2⁹ = 100001102109479 is a prime.

It is a super-3 number, since 3×100001102109991³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001102104991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000551054995 + 50000551054996.

It is an arithmetic number, because the mean of its divisors is an integer number (50000551054996).

Almost surely, 2^{100001102109991} is an apocalyptic number.

100001102109991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001102109991 is an equidigital number, since it uses as much as digits as its factorization.

100001102109991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 34.

Adding to 100001102109991 its reverse (199901201100001), we get a palindrome (299902303209992).

The spelling of 100001102109991 in words is "one hundred trillion, one billion, one hundred two million, one hundred nine thousand, nine hundred ninety-one".