201210022221 has 16 divisors (see below), whose sum is σ = 288925257600. Its totient is φ = 123817993920.

The previous prime is 201210022219. The next prime is 201210022231. The reversal of 201210022221 is 122220012102.

201210022221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201210022221 - 2¹ = 201210022219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201210022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210022231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2129931 + ... + 2222391.

It is an arithmetic number, because the mean of its divisors is an integer number (18057828600).

Almost surely, 2^201210022221 is an apocalyptic number.

It is an amenable number.

201210022221 is a deficient number, since it is larger than the sum of its proper divisors (87715235379).

201210022221 is a wasteful number, since it uses less digits than its factorization.

201210022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148276.

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

Adding to 201210022221 its reverse (122220012102), we get a palindrome (323430034323).

The spelling of 201210022221 in words is "two hundred one billion, two hundred ten million, twenty-two thousand, two hundred twenty-one".