211100119991 has 2 divisors, whose sum is σ = 211100119992. Its totient is φ = 211100119990.

The previous prime is 211100119957. The next prime is 211100120051. The reversal of 211100119991 is 199911001112.

211100119991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211100119991 - 2⁶ = 211100119927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211100119931) 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, 105550059995 + 105550059996.

It is an arithmetic number, because the mean of its divisors is an integer number (105550059996).

Almost surely, 2^211100119991 is an apocalyptic number.

211100119991 is a deficient number, since it is larger than the sum of its proper divisors (1).

211100119991 is an equidigital number, since it uses as much as digits as its factorization.

211100119991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 211100119991 in words is "two hundred eleven billion, one hundred million, one hundred nineteen thousand, nine hundred ninety-one".