201222212201 has 2 divisors, whose sum is σ = 201222212202. Its totient is φ = 201222212200.

The previous prime is 201222212197. The next prime is 201222212207. The reversal of 201222212201 is 102212222102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191598798400 + 9623413801 = 437720^2 + 98099^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222212201 - 2² = 201222212197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201222212201.

It is not a weakly prime, because it can be changed into another prime (201222212207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611106100 + 100611106101.

It is an arithmetic number, because the mean of its divisors is an integer number (100611106101).

Almost surely, 2^201222212201 is an apocalyptic number.

It is an amenable number.

201222212201 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222212201 is an equidigital number, since it uses as much as digits as its factorization.

201222212201 is an odious number, because the sum of its binary digits is odd.

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

Adding to 201222212201 its reverse (102212222102), we get a palindrome (303434434303).

Subtracting from 201222212201 its reverse (102212222102), we obtain a palindrome (99009990099).

The spelling of 201222212201 in words is "two hundred one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred one".