20121120220201 has 64 divisors (see below), whose sum is σ = 29131254835200. Its totient is φ = 13376595571200.

The previous prime is 20121120220177. The next prime is 20121120220213. The reversal of 20121120220201 is 10202202112102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20121120220201 - 2¹⁹ = 20121119695913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121120220261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12122031 + ... + 13681588.

It is an arithmetic number, because the mean of its divisors is an integer number (455175856800).

Almost surely, 2^{20121120220201} is an apocalyptic number.

It is an amenable number.

20121120220201 is a deficient number, since it is larger than the sum of its proper divisors (9010134614999).

20121120220201 is a wasteful number, since it uses less digits than its factorization.

20121120220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25803710.

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

Adding to 20121120220201 its reverse (10202202112102), we get a palindrome (30323322332303).

The spelling of 20121120220201 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty million, two hundred twenty thousand, two hundred one".