202021222201 has 2 divisors, whose sum is σ = 202021222202. Its totient is φ = 202021222200.

The previous prime is 202021222199. The next prime is 202021222231. The reversal of 202021222201 is 102222120202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155646030400 + 46375191801 = 394520^2 + 215349^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021222201 - 2¹ = 202021222199 is a prime.

Together with 202021222199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202021222231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010611100 + 101010611101.

It is an arithmetic number, because the mean of its divisors is an integer number (101010611101).

Almost surely, 2^202021222201 is an apocalyptic number.

It is an amenable number.

202021222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021222201 is an equidigital number, since it uses as much as digits as its factorization.

202021222201 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 16.

Adding to 202021222201 its reverse (102222120202), we get a palindrome (304243342403).

The spelling of 202021222201 in words is "two hundred two billion, twenty-one million, two hundred twenty-two thousand, two hundred one".