100010000121091 has 2 divisors, whose sum is σ = 100010000121092. Its totient is φ = 100010000121090.

The previous prime is 100010000121019. The next prime is 100010000121167. The reversal of 100010000121091 is 190121000010001.

Together with previous prime (100010000121019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100010000121091 - 2⁷ = 100010000120963 is a prime.

It is not a weakly prime, because it can be changed into another prime (100010000121791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005000060545 + 50005000060546.

It is an arithmetic number, because the mean of its divisors is an integer number (50005000060546).

Almost surely, 2^{100010000121091} is an apocalyptic number.

100010000121091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100010000121091 is an equidigital number, since it uses as much as digits as its factorization.

100010000121091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 100010000121091 its reverse (190121000010001), we get a palindrome (290131000131092).

The spelling of 100010000121091 in words is "one hundred trillion, ten billion, one hundred twenty-one thousand, ninety-one".