2011123310112 has 144 divisors (see below), whose sum is σ = 6643301176512. Its totient is φ = 565186844160.

The previous prime is 2011123310107. The next prime is 2011123310191. The reversal of 2011123310112 is 2110133211102.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8053918 + ... + 8299869.

It is an arithmetic number, because the mean of its divisors is an integer number (46134035948).

Almost surely, 2^{2011123310112} is an apocalyptic number.

It is an amenable number.

2011123310112 is an abundant number, since it is smaller than the sum of its proper divisors (4632177866400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011123310112 is a wasteful number, since it uses less digits than its factorization.

2011123310112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16353871 (or 16353860 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2011123310112 its reverse (2110133211102), we get a palindrome (4121256521214).

The spelling of 2011123310112 in words is "two trillion, eleven billion, one hundred twenty-three million, three hundred ten thousand, one hundred twelve".