12012121200112 has 40 divisors (see below), whose sum is σ = 25559653921200. Its totient is φ = 5423410414080.

The previous prime is 12012121200097. The next prime is 12012121200139. The reversal of 12012121200112 is 21100212121021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229002933 + ... + 229055380.

It is an arithmetic number, because the mean of its divisors is an integer number (638991348030).

Almost surely, 2^{12012121200112} is an apocalyptic number.

It is an amenable number.

12012121200112 is an abundant number, since it is smaller than the sum of its proper divisors (13547532721088).

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

12012121200112 is a wasteful number, since it uses less digits than its factorization.

12012121200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458058481 (or 458058475 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12012121200112 its reverse (21100212121021), we get a palindrome (33112333321133).

The spelling of 12012121200112 in words is "twelve trillion, twelve billion, one hundred twenty-one million, two hundred thousand, one hundred twelve".