201020220201221 has 8 divisors (see below), whose sum is σ = 201461785937664. Its totient is φ = 200579129014320.

The previous prime is 201020220201187. The next prime is 201020220201259. The reversal of 201020220201221 is 122102022020102.

It is a happy number.

201020220201221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201020220201221 - 2¹⁴ = 201020220184837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201020220201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020220201121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117789245 + ... + 119483666.

It is an arithmetic number, because the mean of its divisors is an integer number (25182723242208).

Almost surely, 2^{201020220201221} is an apocalyptic number.

It is an amenable number.

201020220201221 is a deficient number, since it is larger than the sum of its proper divisors (441565736443).

201020220201221 is a wasteful number, since it uses less digits than its factorization.

201020220201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237274771.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201020220201221 its reverse (122102022020102), we get a palindrome (323122242221323).

The spelling of 201020220201221 in words is "two hundred one trillion, twenty billion, two hundred twenty million, two hundred one thousand, two hundred twenty-one".