201322121321 has 8 divisors (see below), whose sum is σ = 201502962888. Its totient is φ = 201141360000.

The previous prime is 201322121311. The next prime is 201322121347. The reversal of 201322121321 is 123121223102.

It can be written as a sum of positive squares in 4 ways, for example, as 2530090000 + 198792031321 = 50300^2 + 445861^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201322121321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201322121293 and 201322121302.

It is not an unprimeable number, because it can be changed into a prime (201322121311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5711411 + ... + 5746551.

It is an arithmetic number, because the mean of its divisors is an integer number (25187870361).

Almost surely, 2^201322121321 is an apocalyptic number.

It is an amenable number.

201322121321 is a deficient number, since it is larger than the sum of its proper divisors (180841567).

201322121321 is a wasteful number, since it uses less digits than its factorization.

201322121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40123.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 201322121321 its reverse (123121223102), we get a palindrome (324443344423).

The spelling of 201322121321 in words is "two hundred one billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-one".