201322122101 has 4 divisors (see below), whose sum is σ = 206232417804. Its totient is φ = 196411826400.

The previous prime is 201322122083. The next prime is 201322122109. The reversal of 201322122101 is 101221223102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101221223102 = 2 ⋅50610611551.

It can be written as a sum of positive squares in 2 ways, for example, as 114061552900 + 87260569201 = 337730^2 + 295399^2 .

It is a cyclic number.

It is not a de Polignac number, because 201322122101 - 2¹⁴ = 201322105717 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 201322122101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201322122109) 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, 2455147790 + ... + 2455147871.

It is an arithmetic number, because the mean of its divisors is an integer number (51558104451).

Almost surely, 2^201322122101 is an apocalyptic number.

It is an amenable number.

201322122101 is a deficient number, since it is larger than the sum of its proper divisors (4910295703).

201322122101 is an equidigital number, since it uses as much as digits as its factorization.

201322122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4910295702.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201322122101 its reverse (101221223102), we get a palindrome (302543345203).

The spelling of 201322122101 in words is "two hundred one billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred one".