202212001116221 has 2 divisors, whose sum is σ = 202212001116222. Its totient is φ = 202212001116220.

The previous prime is 202212001116163. The next prime is 202212001116347. The reversal of 202212001116221 is 122611100212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107053166222500 + 95158834893721 = 10346650^2 + 9754939^2 .

It is a cyclic number.

It is not a de Polignac number, because 202212001116221 - 2¹⁸ = 202212000854077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202212001119221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101106000558110 + 101106000558111.

It is an arithmetic number, because the mean of its divisors is an integer number (101106000558111).

Almost surely, 2^{202212001116221} is an apocalyptic number.

It is an amenable number.

202212001116221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202212001116221 is an equidigital number, since it uses as much as digits as its factorization.

202212001116221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 202212001116221 its reverse (122611100212202), we get a palindrome (324823101328423).

The spelling of 202212001116221 in words is "two hundred two trillion, two hundred twelve billion, one million, one hundred sixteen thousand, two hundred twenty-one".