11210129809 has 2 divisors, whose sum is σ = 11210129810. Its totient is φ = 11210129808.

The previous prime is 11210129807. The next prime is 11210129837. The reversal of 11210129809 is 90892101211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10683289600 + 526840209 = 103360^2 + 22953^2 .

It is a cyclic number.

It is not a de Polignac number, because 11210129809 - 2¹ = 11210129807 is a prime.

Together with 11210129807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11210129803) 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 as a sum of consecutive naturals, namely, 5605064904 + 5605064905.

It is an arithmetic number, because the mean of its divisors is an integer number (5605064905).

Almost surely, 2^11210129809 is an apocalyptic number.

It is an amenable number.

11210129809 is a deficient number, since it is larger than the sum of its proper divisors (1).

11210129809 is an equidigital number, since it uses as much as digits as its factorization.

11210129809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 11210129809 in words is "eleven billion, two hundred ten million, one hundred twenty-nine thousand, eight hundred nine".