201202112210221 has 2 divisors, whose sum is σ = 201202112210222. Its totient is φ = 201202112210220.

The previous prime is 201202112210171. The next prime is 201202112210233. The reversal of 201202112210221 is 122012211202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196985126749321 + 4216985460900 = 14035139^2 + 2053530^2 .

It is a cyclic number.

It is not a de Polignac number, because 201202112210221 - 2¹⁹ = 201202111685933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201202112210521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100601056105110 + 100601056105111.

It is an arithmetic number, because the mean of its divisors is an integer number (100601056105111).

Almost surely, 2^{201202112210221} is an apocalyptic number.

It is an amenable number.

201202112210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201202112210221 is an equidigital number, since it uses as much as digits as its factorization.

201202112210221 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 19.

Adding to 201202112210221 its reverse (122012211202102), we get a palindrome (323214323412323).

The spelling of 201202112210221 in words is "two hundred one trillion, two hundred two billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-one".