201221200112012 has 12 divisors (see below), whose sum is σ = 364279758823680. Its totient is φ = 97141269019536.

The previous prime is 201221200111951. The next prime is 201221200112033. The reversal of 201221200112012 is 210211002122102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867332758988 + ... + 867332759219.

It is an arithmetic number, because the mean of its divisors is an integer number (30356646568640).

Almost surely, 2^{201221200112012} is an apocalyptic number.

It is an amenable number.

201221200112012 is a deficient number, since it is larger than the sum of its proper divisors (163058558711668).

201221200112012 is a wasteful number, since it uses less digits than its factorization.

201221200112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734665518240 (or 1734665518238 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201221200112012 its reverse (210211002122102), we get a palindrome (411432202234114).

The spelling of 201221200112012 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred million, one hundred twelve thousand, twelve".