20303320010213 has 4 divisors (see below), whose sum is σ = 20337102573228. Its totient is φ = 20269537447200.

The previous prime is 20303320010203. The next prime is 20303320010297. The reversal of 20303320010213 is 31201002330302.

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 16248501469249 + 4054818540964 = 4030943^2 + 2013658^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303320010213 - 2⁸ = 20303320009957 is a prime.

It is a super-2 number, since 2×20303320010213² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303320010203) 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, 16891280606 + ... + 16891281807.

It is an arithmetic number, because the mean of its divisors is an integer number (5084275643307).

Almost surely, 2^{20303320010213} is an apocalyptic number.

It is an amenable number.

20303320010213 is a deficient number, since it is larger than the sum of its proper divisors (33782563015).

20303320010213 is an equidigital number, since it uses as much as digits as its factorization.

20303320010213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33782563014.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20303320010213 its reverse (31201002330302), we get a palindrome (51504322340515).

The spelling of 20303320010213 in words is "twenty trillion, three hundred three billion, three hundred twenty million, ten thousand, two hundred thirteen".