11000219891 has 2 divisors, whose sum is σ = 11000219892. Its totient is φ = 11000219890.

The previous prime is 11000219863. The next prime is 11000219899. The reversal of 11000219891 is 19891200011.

11000219891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11000219891 - 2¹⁴ = 11000203507 is a prime.

It is not a weakly prime, because it can be changed into another prime (11000219899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500109945 + 5500109946.

It is an arithmetic number, because the mean of its divisors is an integer number (5500109946).

Almost surely, 2^11000219891 is an apocalyptic number.

11000219891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000219891 is an equidigital number, since it uses as much as digits as its factorization.

11000219891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 11000219891 in words is "eleven billion, two hundred nineteen thousand, eight hundred ninety-one".