100120010110091 has 2 divisors, whose sum is σ = 100120010110092. Its totient is φ = 100120010110090.

The previous prime is 100120010110007. The next prime is 100120010110093. The reversal of 100120010110091 is 190011010021001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100120010110091 - 2¹⁸ = 100120009847947 is a prime.

It is a Sophie Germain prime.

Together with 100120010110093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100120010110093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060005055045 + 50060005055046.

It is an arithmetic number, because the mean of its divisors is an integer number (50060005055046).

Almost surely, 2^{100120010110091} is an apocalyptic number.

100120010110091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120010110091 is an equidigital number, since it uses as much as digits as its factorization.

100120010110091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 100120010110091 its reverse (190011010021001), we get a palindrome (290131020131092).

The spelling of 100120010110091 in words is "one hundred trillion, one hundred twenty billion, ten million, one hundred ten thousand, ninety-one".