2012021221201 has 16 divisors (see below), whose sum is σ = 2053745182720. Its totient is φ = 1970723623680.

The previous prime is 2012021221123. The next prime is 2012021221207. The reversal of 2012021221201 is 1021221202102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2012021221201 - 2⁹ = 2012021220689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012021221207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6507016 + ... + 6809206.

It is an arithmetic number, because the mean of its divisors is an integer number (128359073920).

Almost surely, 2^{2012021221201} is an apocalyptic number.

It is an amenable number.

2012021221201 is a deficient number, since it is larger than the sum of its proper divisors (41723961519).

2012021221201 is a wasteful number, since it uses less digits than its factorization.

2012021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302896.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012021221201 its reverse (1021221202102), we get a palindrome (3033242423303).

The spelling of 2012021221201 in words is "two trillion, twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred one".