10000120020009 has 32 divisors (see below), whose sum is σ = 15549788160000. Its totient is φ = 5714161446672.

The previous prime is 10000120019993. The next prime is 10000120020013. The reversal of 10000120020009 is 90002002100001.

It is a happy number.

It is not a de Polignac number, because 10000120020009 - 2⁴ = 10000120019993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10000120020009.

It is not an unprimeable number, because it can be changed into a prime (10000120020509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33746712 + ... + 34041750.

It is an arithmetic number, because the mean of its divisors is an integer number (485930880000).

Almost surely, 2^{10000120020009} is an apocalyptic number.

It is an amenable number.

10000120020009 is a deficient number, since it is larger than the sum of its proper divisors (5549668139991).

10000120020009 is an equidigital number, since it uses as much as digits as its factorization.

10000120020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328002 (or 327988 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The spelling of 10000120020009 in words is "ten trillion, one hundred twenty million, twenty thousand, nine".