211120191808 has 28 divisors (see below), whose sum is σ = 432455880832. Its totient is φ = 102154930560.

The previous prime is 211120191767. The next prime is 211120191809. The reversal of 211120191808 is 808191021112.

211120191808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120191809) 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 in 3 ways as a sum of consecutive naturals, for example, 53203710 + ... + 53207677.

Almost surely, 2^211120191808 is an apocalyptic number.

It is an amenable number.

211120191808 is an abundant number, since it is smaller than the sum of its proper divisors (221335689024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211120191808 is a wasteful number, since it uses less digits than its factorization.

211120191808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106411430 (or 106411420 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 34.

The spelling of 211120191808 in words is "two hundred eleven billion, one hundred twenty million, one hundred ninety-one thousand, eight hundred eight".