201122212101 has 16 divisors (see below), whose sum is σ = 268829721600. Its totient is φ = 133748279280.

The previous prime is 201122212079. The next prime is 201122212111. The reversal of 201122212101 is 101212221102.

201122212101 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 201122212101 - 2⁶ = 201122212037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122212111) 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, 4560366 + ... + 4604256.

It is an arithmetic number, because the mean of its divisors is an integer number (16801857600).

Almost surely, 2^201122212101 is an apocalyptic number.

It is an amenable number.

201122212101 is a deficient number, since it is larger than the sum of its proper divisors (67707509499).

201122212101 is a wasteful number, since it uses less digits than its factorization.

201122212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47656.

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

Adding to 201122212101 its reverse (101212221102), we get a palindrome (302334433203).

Subtracting from 201122212101 its reverse (101212221102), we obtain a palindrome (99909990999).

The spelling of 201122212101 in words is "two hundred one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred one".