211130026909 has 2 divisors, whose sum is σ = 211130026910. Its totient is φ = 211130026908.

The previous prime is 211130026871. The next prime is 211130026931. The reversal of 211130026909 is 909620031112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133875492100 + 77254534809 = 365890^2 + 277947^2 .

It is a cyclic number.

It is not a de Polignac number, because 211130026909 - 2⁹ = 211130026397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211130021909) by changing a digit.

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 as a sum of consecutive naturals, namely, 105565013454 + 105565013455.

It is an arithmetic number, because the mean of its divisors is an integer number (105565013455).

Almost surely, 2^211130026909 is an apocalyptic number.

It is an amenable number.

211130026909 is a deficient number, since it is larger than the sum of its proper divisors (1).

211130026909 is an equidigital number, since it uses as much as digits as its factorization.

211130026909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 211130026909 in words is "two hundred eleven billion, one hundred thirty million, twenty-six thousand, nine hundred nine".