201022201221 has 8 divisors (see below), whose sum is σ = 268116383040. Its totient is φ = 133971410112.

The previous prime is 201022201183. The next prime is 201022201223. The reversal of 201022201221 is 122102220102.

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

It is not a de Polignac number, because 201022201221 - 2¹⁴ = 201022184837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201022201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022201223) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10836865 + ... + 10855398.

It is an arithmetic number, because the mean of its divisors is an integer number (33514547880).

Almost surely, 2^201022201221 is an apocalyptic number.

It is an amenable number.

201022201221 is a deficient number, since it is larger than the sum of its proper divisors (67094181819).

201022201221 is a wasteful number, since it uses less digits than its factorization.

201022201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21695355.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201022201221 its reverse (122102220102), we get a palindrome (323124421323).

The spelling of 201022201221 in words is "two hundred one billion, twenty-two million, two hundred one thousand, two hundred twenty-one".