209211119120 has 20 divisors (see below), whose sum is σ = 486415852140. Its totient is φ = 83684447616.

The previous prime is 209211119111. The next prime is 209211119177. The reversal of 209211119120 is 21911112902.

It can be written as a sum of positive squares in 2 ways, for example, as 125951170816 + 83259948304 = 354896^2 + 288548^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1307569415 + ... + 1307569574.

It is an arithmetic number, because the mean of its divisors is an integer number (24320792607).

Almost surely, 2^209211119120 is an apocalyptic number.

209211119120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

209211119120 is an abundant number, since it is smaller than the sum of its proper divisors (277204733020).

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

209211119120 is a wasteful number, since it uses less digits than its factorization.

209211119120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615139002 (or 2615138996 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 209211119120 in words is "two hundred nine billion, two hundred eleven million, one hundred nineteen thousand, one hundred twenty".