2111020110091 has 2 divisors, whose sum is σ = 2111020110092. Its totient is φ = 2111020110090.

The previous prime is 2111020110083. The next prime is 2111020110103. The reversal of 2111020110091 is 1900110201112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111020110091 - 2³ = 2111020110083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111020110491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510055045 + 1055510055046.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510055046).

Almost surely, 2^{2111020110091} is an apocalyptic number.

2111020110091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111020110091 is an equidigital number, since it uses as much as digits as its factorization.

2111020110091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 2111020110091 in words is "two trillion, one hundred eleven billion, twenty million, one hundred ten thousand, ninety-one".