2121200112012 has 12 divisors (see below), whose sum is σ = 4949466928056. Its totient is φ = 707066704000.

The previous prime is 2121200112001. The next prime is 2121200112029. The reversal of 2121200112012 is 2102110021212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2121200111982 and 2121200112000.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 88383337989 + ... + 88383338012.

It is an arithmetic number, because the mean of its divisors is an integer number (412455577338).

Almost surely, 2^{2121200112012} is an apocalyptic number.

It is an amenable number.

2121200112012 is an abundant number, since it is smaller than the sum of its proper divisors (2828266816044).

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

2121200112012 is a wasteful number, since it uses less digits than its factorization.

2121200112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176766676008 (or 176766676006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121200112012 its reverse (2102110021212), we get a palindrome (4223310133224).

The spelling of 2121200112012 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred twelve thousand, twelve".