201322203221 has 4 divisors (see below), whose sum is σ = 202791708492. Its totient is φ = 199852697952.

The previous prime is 201322203209. The next prime is 201322203283. The reversal of 201322203221 is 122302223102.

It is a happy number.

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 77760111025 + 123562092196 = 278855^2 + 351514^2 .

It is a cyclic number.

It is not a de Polignac number, because 201322203221 - 2¹⁴ = 201322186837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201322203193 and 201322203202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201322203821) 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, 734752430 + ... + 734752703.

It is an arithmetic number, because the mean of its divisors is an integer number (50697927123).

Almost surely, 2^201322203221 is an apocalyptic number.

It is an amenable number.

201322203221 is a deficient number, since it is larger than the sum of its proper divisors (1469505271).

201322203221 is a wasteful number, since it uses less digits than its factorization.

201322203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469505270.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 201322203221 its reverse (122302223102), we get a palindrome (323624426323).

The spelling of 201322203221 in words is "two hundred one billion, three hundred twenty-two million, two hundred three thousand, two hundred twenty-one".