100011001009 has 2 divisors, whose sum is σ = 100011001010. Its totient is φ = 100011001008.

The previous prime is 100011000941. The next prime is 100011001093. The reversal of 100011001009 is 900100110001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99321413409 + 689587600 = 315153^2 + 26260^2 .

It is an emirp because it is prime and its reverse (900100110001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100011001009 - 2⁹ = 100011000497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100011001009.

It is not a weakly prime, because it can be changed into another prime (100011001109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005500504 + 50005500505.

It is an arithmetic number, because the mean of its divisors is an integer number (50005500505).

Almost surely, 2^100011001009 is an apocalyptic number.

It is an amenable number.

100011001009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100011001009 is an equidigital number, since it uses as much as digits as its factorization.

100011001009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

The spelling of 100011001009 in words is "one hundred billion, eleven million, one thousand, nine".