11112012112012 has 72 divisors (see below), whose sum is σ = 23240420704368. Its totient is φ = 4631952124800.

The previous prime is 11112012112007. The next prime is 11112012112013. The reversal of 11112012112012 is 21021121021111.

It is not an unprimeable number, because it can be changed into a prime (11112012112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20480187 + ... + 21015757.

It is an arithmetic number, because the mean of its divisors is an integer number (322783620894).

Almost surely, 2^{11112012112012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112012112012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11620210352184).

11112012112012 is an abundant number, since it is smaller than the sum of its proper divisors (12128408592356).

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

11112012112012 is a wasteful number, since it uses less digits than its factorization.

11112012112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538487 (or 538478 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11112012112012 its reverse (21021121021111), we get a palindrome (32133133133123).

The spelling of 11112012112012 in words is "eleven trillion, one hundred twelve billion, twelve million, one hundred twelve thousand, twelve".