2011000001209 has 8 divisors (see below), whose sum is σ = 2039925936960. Its totient is φ = 1982090787600.

The previous prime is 2011000001207. The next prime is 2011000001221. The reversal of 2011000001209 is 9021000001102.

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 2011000001209 - 2¹ = 2011000001207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011000001192 and 2011000001201.

It is not an unprimeable number, because it can be changed into a prime (2011000001207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3938187 + ... + 4419424.

It is an arithmetic number, because the mean of its divisors is an integer number (254990742120).

Almost surely, 2^{2011000001209} is an apocalyptic number.

It is an amenable number.

2011000001209 is a deficient number, since it is larger than the sum of its proper divisors (28925935751).

2011000001209 is an equidigital number, since it uses as much as digits as its factorization.

2011000001209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8361071.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 2011000001209 in words is "two trillion, eleven billion, one thousand, two hundred nine".