20100110122091 has 2 divisors, whose sum is σ = 20100110122092. Its totient is φ = 20100110122090.

The previous prime is 20100110122073. The next prime is 20100110122189. The reversal of 20100110122091 is 19022101100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100110122091 - 2¹⁰ = 20100110121067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20100110122291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050055061045 + 10050055061046.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055061046).

Almost surely, 2^{20100110122091} is an apocalyptic number.

20100110122091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100110122091 is an equidigital number, since it uses as much as digits as its factorization.

20100110122091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 20100110122091 its reverse (19022101100102), we get a palindrome (39122211222193).

The spelling of 20100110122091 in words is "twenty trillion, one hundred billion, one hundred ten million, one hundred twenty-two thousand, ninety-one".