1103312112012 has 96 divisors (see below), whose sum is σ = 3149107315200. Its totient is φ = 331269652800.

The previous prime is 1103312111999. The next prime is 1103312112029. The reversal of 1103312112012 is 2102112133011.

1103312112012 is a `hidden beast` number, since 110 + 331 + 21 + 1 + 201 + 2 = 666.

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 31 ways as a sum of consecutive naturals, for example, 4130664 + ... + 4389647.

It is an arithmetic number, because the mean of its divisors is an integer number (32803201200).

Almost surely, 2^{1103312112012} is an apocalyptic number.

1103312112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1103312112012 is an abundant number, since it is smaller than the sum of its proper divisors (2045795203188).

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

1103312112012 is a wasteful number, since it uses less digits than its factorization.

1103312112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520444 (or 8520436 counting only the distinct ones).

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

Adding to 1103312112012 its reverse (2102112133011), we get a palindrome (3205424245023).

The spelling of 1103312112012 in words is "one trillion, one hundred three billion, three hundred twelve million, one hundred twelve thousand, twelve".