100112020210991 has 2 divisors, whose sum is σ = 100112020210992. Its totient is φ = 100112020210990.

The previous prime is 100112020210963. The next prime is 100112020211051. The reversal of 100112020210991 is 199012020211001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100112020210991 - 2¹⁸ = 100112019948847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100112020210931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50056010105495 + 50056010105496.

It is an arithmetic number, because the mean of its divisors is an integer number (50056010105496).

Almost surely, 2^{100112020210991} is an apocalyptic number.

100112020210991 is a deficient number, since it is larger than the sum of its proper divisors (1).

100112020210991 is an equidigital number, since it uses as much as digits as its factorization.

100112020210991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

Adding to 100112020210991 its reverse (199012020211001), we get a palindrome (299124040421992).

The spelling of 100112020210991 in words is "one hundred trillion, one hundred twelve billion, twenty million, two hundred ten thousand, nine hundred ninety-one".