211130009 has 2 divisors, whose sum is σ = 211130010. Its totient is φ = 211130008.

The previous prime is 211129999. The next prime is 211130027. The reversal of 211130009 is 900031112.

It is a happy number.

211130009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158886025 + 52243984 = 12605^2 + 7228^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130009 - 2¹⁶ = 211064473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211130039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105565004 + 105565005.

It is an arithmetic number, because the mean of its divisors is an integer number (105565005).

Almost surely, 2^211130009 is an apocalyptic number.

It is an amenable number.

211130009 is a deficient number, since it is larger than the sum of its proper divisors (1).

211130009 is an equidigital number, since it uses as much as digits as its factorization.

211130009 is an evil number, because the sum of its binary digits is even.

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

The square root of 211130009 is about 14530.3134515399. The cubic root of 211130009 is about 595.4564291977.

The spelling of 211130009 in words is "two hundred eleven million, one hundred thirty thousand, nine".