211120012209 has 32 divisors (see below), whose sum is σ = 292710862080. Its totient is φ = 135189347328.

The previous prime is 211120012183. The next prime is 211120012283. The reversal of 211120012209 is 902210021112.

It is not a de Polignac number, because 211120012209 - 2⁵ = 211120012177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211120010209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26409117 + ... + 26417109.

It is an arithmetic number, because the mean of its divisors is an integer number (9147214440).

Almost surely, 2^211120012209 is an apocalyptic number.

211120012209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

211120012209 is a deficient number, since it is larger than the sum of its proper divisors (81590849871).

211120012209 is a wasteful number, since it uses less digits than its factorization.

211120012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9561.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 211120012209 in words is "two hundred eleven billion, one hundred twenty million, twelve thousand, two hundred nine".