211130000009 has 4 divisors (see below), whose sum is σ = 211303485204. Its totient is φ = 210956514816.

The previous prime is 211129999981. The next prime is 211130000023. The reversal of 211130000009 is 900000031112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 135214321225 + 75915678784 = 367715^2 + 275528^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130000009 - 2¹⁶ = 211129934473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211130000069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86740772 + ... + 86743205.

It is an arithmetic number, because the mean of its divisors is an integer number (52825871301).

Almost surely, 2^211130000009 is an apocalyptic number.

It is an amenable number.

211130000009 is a deficient number, since it is larger than the sum of its proper divisors (173485195).

211130000009 is a wasteful number, since it uses less digits than its factorization.

211130000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173485194.

The product of its (nonzero) digits is 54, while the sum is 17.

The spelling of 211130000009 in words is "two hundred eleven billion, one hundred thirty million, nine", and thus it is an aban number.