202342324021 has 2 divisors, whose sum is σ = 202342324022. Its totient is φ = 202342324020.

The previous prime is 202342324001. The next prime is 202342324031. The reversal of 202342324021 is 120423243202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195908038225 + 6434285796 = 442615^2 + 80214^2 .

It is a cyclic number.

It is not a de Polignac number, because 202342324021 - 2⁷ = 202342323893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202342324001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101171162010 + 101171162011.

It is an arithmetic number, because the mean of its divisors is an integer number (101171162011).

Almost surely, 2^202342324021 is an apocalyptic number.

It is an amenable number.

202342324021 is a deficient number, since it is larger than the sum of its proper divisors (1).

202342324021 is an equidigital number, since it uses as much as digits as its factorization.

202342324021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 202342324021 its reverse (120423243202), we get a palindrome (322765567223).

The spelling of 202342324021 in words is "two hundred two billion, three hundred forty-two million, three hundred twenty-four thousand, twenty-one".