20002011211009 has 8 divisors (see below), whose sum is σ = 20043097004520. Its totient is φ = 19960966281600.

The previous prime is 20002011210997. The next prime is 20002011211019. The reversal of 20002011211009 is 90011211020002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10686177936784 + 9315833274225 = 3268972^2 + 3052185^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20002011211009 - 2⁵ = 20002011210977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002011211019) 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 in 7 ways as a sum of consecutive naturals, for example, 9235972 + ... + 11194069.

It is an arithmetic number, because the mean of its divisors is an integer number (2505387125565).

Almost surely, 2^{20002011211009} is an apocalyptic number.

It is an amenable number.

20002011211009 is a deficient number, since it is larger than the sum of its proper divisors (41085793511).

20002011211009 is a wasteful number, since it uses less digits than its factorization.

20002011211009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20432051.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 20002011211009 in words is "twenty trillion, two billion, eleven million, two hundred eleven thousand, nine".