2001211120009 has 8 divisors (see below), whose sum is σ = 2118942836640. Its totient is φ = 1883480894016.

The previous prime is 2001211120003. The next prime is 2001211120039. The reversal of 2001211120009 is 9000211121002.

It is a happy number.

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 2001211120009 - 2⁵ = 2001211119977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001211120003) 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, 3603682 + ... + 4121764.

It is an arithmetic number, because the mean of its divisors is an integer number (264867854580).

Almost surely, 2^{2001211120009} is an apocalyptic number.

It is an amenable number.

2001211120009 is a deficient number, since it is larger than the sum of its proper divisors (117731716631).

2001211120009 is a wasteful number, since it uses less digits than its factorization.

2001211120009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745319.

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

The spelling of 2001211120009 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty thousand, nine".