202340302021 has 24 divisors (see below), whose sum is σ = 239618016792. Its totient is φ = 169723276800.

The previous prime is 202340301979. The next prime is 202340302063. The reversal of 202340302021 is 120203043202.

It is an interprime number because it is at equal distance from previous prime (202340301979) and next prime (202340302063).

It can be written as a sum of positive squares in 4 ways, for example, as 16074689796 + 186265612225 = 126786^2 + 431585^2 .

It is not a de Polignac number, because 202340302021 - 2⁷ = 202340301893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202340302021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202340302421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3813345 + ... + 3866041.

It is an arithmetic number, because the mean of its divisors is an integer number (9984084033).

Almost surely, 2^202340302021 is an apocalyptic number.

It is an amenable number.

202340302021 is a deficient number, since it is larger than the sum of its proper divisors (37277714771).

202340302021 is a wasteful number, since it uses less digits than its factorization.

202340302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55173 (or 55162 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 202340302021 its reverse (120203043202), we get a palindrome (322543345223).

The spelling of 202340302021 in words is "two hundred two billion, three hundred forty million, three hundred two thousand, twenty-one".