1009211121835 has 8 divisors (see below), whose sum is σ = 1384060967136. Its totient is φ = 692030483520.

The previous prime is 1009211121829. The next prime is 1009211121839. The reversal of 1009211121835 is 5381211129001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1009211121835 - 2¹⁹ = 1009210597547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1009211121835.

It is not an unprimeable number, because it can be changed into a prime (1009211121839) 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 7 ways as a sum of consecutive naturals, for example, 14417301706 + ... + 14417301775.

It is an arithmetic number, because the mean of its divisors is an integer number (173007620892).

Almost surely, 2^{1009211121835} is an apocalyptic number.

1009211121835 is a deficient number, since it is larger than the sum of its proper divisors (374849845301).

1009211121835 is an equidigital number, since it uses as much as digits as its factorization.

1009211121835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28834603493.

The product of its (nonzero) digits is 4320, while the sum is 34.

The spelling of 1009211121835 in words is "one trillion, nine billion, two hundred eleven million, one hundred twenty-one thousand, eight hundred thirty-five".