201122101212101 has 4 divisors (see below), whose sum is σ = 201122383881900. Its totient is φ = 201121818542304.

The previous prime is 201122101212073. The next prime is 201122101212139. The reversal of 201122101212101 is 101212101221102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99878237088100 + 101243864124001 = 9993910^2 + 10062001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122101212101 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 201122101212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122101262101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140264936 + ... + 141691553.

It is an arithmetic number, because the mean of its divisors is an integer number (50280595970475).

Almost surely, 2^{201122101212101} is an apocalyptic number.

It is an amenable number.

201122101212101 is a deficient number, since it is larger than the sum of its proper divisors (282669799).

201122101212101 is an equidigital number, since it uses as much as digits as its factorization.

201122101212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282669798.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201122101212101 its reverse (101212101221102), we get a palindrome (302334202433203).

Subtracting from 201122101212101 its reverse (101212101221102), we obtain a palindrome (99909999990999).

The spelling of 201122101212101 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred one million, two hundred twelve thousand, one hundred one".