2111100010091 has 2 divisors, whose sum is σ = 2111100010092. Its totient is φ = 2111100010090.

The previous prime is 2111100010049. The next prime is 2111100010127. The reversal of 2111100010091 is 1900100011112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111100010091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111100000091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055550005045 + 1055550005046.

It is an arithmetic number, because the mean of its divisors is an integer number (1055550005046).

Almost surely, 2^{2111100010091} is an apocalyptic number.

2111100010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111100010091 is an equidigital number, since it uses as much as digits as its factorization.

2111100010091 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.

The spelling of 2111100010091 in words is "two trillion, one hundred eleven billion, one hundred million, ten thousand, ninety-one".