201202020221 has 8 divisors (see below), whose sum is σ = 202563401400. Its totient is φ = 199840786432.

The previous prime is 201202020211. The next prime is 201202020289. The reversal of 201202020221 is 122020202102.

It can be written as a sum of positive squares in 4 ways, for example, as 73316392900 + 127885627321 = 270770^2 + 357611^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 201202020221 - 2¹⁰ = 201202019197 is a prime.

It is a super-3 number, since 3×201202020221³ (a number of 35 digits) contains 333 as substring.

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 = 201202020196 and 201202020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5254481 + ... + 5292633.

It is an arithmetic number, because the mean of its divisors is an integer number (25320425175).

Almost surely, 2^201202020221 is an apocalyptic number.

It is an amenable number.

201202020221 is a deficient number, since it is larger than the sum of its proper divisors (1361381179).

201202020221 is a wasteful number, since it uses less digits than its factorization.

201202020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73695.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 201202020221 its reverse (122020202102), we get a palindrome (323222222323).

The spelling of 201202020221 in words is "two hundred one billion, two hundred two million, twenty thousand, two hundred twenty-one".