2011012112009 has 4 divisors (see below), whose sum is σ = 2045097063120. Its totient is φ = 1976927160900.

The previous prime is 2011012111939. The next prime is 2011012112033. The reversal of 2011012112009 is 9002112101102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2011012112009 - 2⁴⁰ = 911500484233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011012112089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17042475467 + ... + 17042475584.

It is an arithmetic number, because the mean of its divisors is an integer number (511274265780).

Almost surely, 2^{2011012112009} is an apocalyptic number.

It is an amenable number.

2011012112009 is a deficient number, since it is larger than the sum of its proper divisors (34084951111).

2011012112009 is an equidigital number, since it uses as much as digits as its factorization.

2011012112009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34084951110.

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

The spelling of 2011012112009 in words is "two trillion, eleven billion, twelve million, one hundred twelve thousand, nine".