12001100112012 has 24 divisors (see below), whose sum is σ = 30548254830912. Its totient is φ = 3636697003600.

The previous prime is 12001100112007. The next prime is 12001100112013. The reversal of 12001100112012 is 21021100110021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12001100112013) 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, 45458712414 + ... + 45458712677.

It is an arithmetic number, because the mean of its divisors is an integer number (1272843951288).

Almost surely, 2^{12001100112012} is an apocalyptic number.

12001100112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001100112012 is an abundant number, since it is smaller than the sum of its proper divisors (18547154718900).

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

12001100112012 is a wasteful number, since it uses less digits than its factorization.

12001100112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90917425109 (or 90917425107 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12001100112012 its reverse (21021100110021), we get a palindrome (33022200222033).

The spelling of 12001100112012 in words is "twelve trillion, one billion, one hundred million, one hundred twelve thousand, twelve".