202021102271 has 2 divisors, whose sum is σ = 202021102272. Its totient is φ = 202021102270.

The previous prime is 202021102259. The next prime is 202021102273. The reversal of 202021102271 is 172201120202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021102271 is a prime.

Together with 202021102273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021102273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010551135 + 101010551136.

It is an arithmetic number, because the mean of its divisors is an integer number (101010551136).

Almost surely, 2^202021102271 is an apocalyptic number.

202021102271 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021102271 is an equidigital number, since it uses as much as digits as its factorization.

202021102271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 202021102271 its reverse (172201120202), we get a palindrome (374222222473).

The spelling of 202021102271 in words is "two hundred two billion, twenty-one million, one hundred two thousand, two hundred seventy-one".