201222221201 has 2 divisors, whose sum is σ = 201222221202. Its totient is φ = 201222221200.

The previous prime is 201222221191. The next prime is 201222221203. The reversal of 201222221201 is 102122222102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118232134801 + 82990086400 = 343849^2 + 288080^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222221201 - 2²⁶ = 201155112337 is a prime.

Together with 201222221203, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201222221201.

It is not a weakly prime, because it can be changed into another prime (201222221203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611110600 + 100611110601.

It is an arithmetic number, because the mean of its divisors is an integer number (100611110601).

Almost surely, 2^201222221201 is an apocalyptic number.

It is an amenable number.

201222221201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222221201 is an equidigital number, since it uses as much as digits as its factorization.

201222221201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201222221201 its reverse (102122222102), we get a palindrome (303344443303).

Subtracting from 201222221201 its reverse (102122222102), we obtain a palindrome (99099999099).

The spelling of 201222221201 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".