2012111021009 has 8 divisors (see below), whose sum is σ = 2016305712000. Its totient is φ = 2007916589376.

The previous prime is 2012111021003. The next prime is 2012111021087. The reversal of 2012111021009 is 9001201112102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012111021009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012111021003) 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, 28304492 + ... + 28375490.

It is an arithmetic number, because the mean of its divisors is an integer number (252038214000).

Almost surely, 2^{2012111021009} is an apocalyptic number.

It is an amenable number.

2012111021009 is a deficient number, since it is larger than the sum of its proper divisors (4194690991).

2012111021009 is an equidigital number, since it uses as much as digits as its factorization.

2012111021009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129679.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2012111021009 in words is "two trillion, twelve billion, one hundred eleven million, twenty-one thousand, nine".