20202331330021 has 2 divisors, whose sum is σ = 20202331330022. Its totient is φ = 20202331330020.

The previous prime is 20202331330007. The next prime is 20202331330037. The reversal of 20202331330021 is 12003313320202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18613443348900 + 1588887981121 = 4314330^2 + 1260511^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202331330021 - 2¹³ = 20202331321829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20202331329974 and 20202331330001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20202331330721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101165665010 + 10101165665011.

It is an arithmetic number, because the mean of its divisors is an integer number (10101165665011).

Almost surely, 2^{20202331330021} is an apocalyptic number.

It is an amenable number.

20202331330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202331330021 is an equidigital number, since it uses as much as digits as its factorization.

20202331330021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20202331330021 its reverse (12003313320202), we get a palindrome (32205644650223).

The spelling of 20202331330021 in words is "twenty trillion, two hundred two billion, three hundred thirty-one million, three hundred thirty thousand, twenty-one".