201101222101 has 16 divisors (see below), whose sum is σ = 234642792384. Its totient is φ = 170649287424.

The previous prime is 201101222099. The next prime is 201101222111. The reversal of 201101222101 is 101222101102.

It is a cyclic number.

It is not a de Polignac number, because 201101222101 - 2¹ = 201101222099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101222111) 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, 10571431 + ... + 10590436.

It is an arithmetic number, because the mean of its divisors is an integer number (14665174524).

Almost surely, 2^201101222101 is an apocalyptic number.

It is an amenable number.

201101222101 is a deficient number, since it is larger than the sum of its proper divisors (33541570283).

201101222101 is a wasteful number, since it uses less digits than its factorization.

201101222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21161940.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201101222101 its reverse (101222101102), we get a palindrome (302323323203).

The spelling of 201101222101 in words is "two hundred one billion, one hundred one million, two hundred twenty-two thousand, one hundred one".