201221100012201 has 16 divisors (see below), whose sum is σ = 270307130872896. Its totient is φ = 133144913431296.

The previous prime is 201221100012181. The next prime is 201221100012203. The reversal of 201221100012201 is 102210001122102.

It is not a de Polignac number, because 201221100012201 - 2¹⁸ = 201221099750057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201221100012203) 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 15 ways as a sum of consecutive naturals, for example, 459637375 + ... + 460074948.

It is an arithmetic number, because the mean of its divisors is an integer number (16894195679556).

Almost surely, 2^{201221100012201} is an apocalyptic number.

It is an amenable number.

201221100012201 is a deficient number, since it is larger than the sum of its proper divisors (69086030860695).

201221100012201 is a wasteful number, since it uses less digits than its factorization.

201221100012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919712872.

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

Adding to 201221100012201 its reverse (102210001122102), we get a palindrome (303431101134303).

The spelling of 201221100012201 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred million, twelve thousand, two hundred one".