202053321013 has 4 divisors (see below), whose sum is σ = 209020676940. Its totient is φ = 195085965088.

The previous prime is 202053320971. The next prime is 202053321017. The reversal of 202053321013 is 310123350202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117362426724 + 84690894289 = 342582^2 + 291017^2 .

It is a cyclic number.

It is not a de Polignac number, because 202053321013 - 2³⁷ = 64614367541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202053321017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3483677920 + ... + 3483677977.

It is an arithmetic number, because the mean of its divisors is an integer number (52255169235).

Almost surely, 2^202053321013 is an apocalyptic number.

It is an amenable number.

202053321013 is a deficient number, since it is larger than the sum of its proper divisors (6967355927).

202053321013 is an equidigital number, since it uses as much as digits as its factorization.

202053321013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967355926.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 202053321013 its reverse (310123350202), we get a palindrome (512176671215).

The spelling of 202053321013 in words is "two hundred two billion, fifty-three million, three hundred twenty-one thousand, thirteen".