2021202202321 has 2 divisors, whose sum is σ = 2021202202322. Its totient is φ = 2021202202320.

The previous prime is 2021202202259. The next prime is 2021202202351. The reversal of 2021202202321 is 1232022021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1919721091600 + 101481110721 = 1385540^2 + 318561^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021202202321 - 2²⁹ = 2020665331409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021202202351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010601101160 + 1010601101161.

It is an arithmetic number, because the mean of its divisors is an integer number (1010601101161).

Almost surely, 2^{2021202202321} is an apocalyptic number.

It is an amenable number.

2021202202321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021202202321 is an equidigital number, since it uses as much as digits as its factorization.

2021202202321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 2021202202321 its reverse (1232022021202), we get a palindrome (3253224223523).

The spelling of 2021202202321 in words is "two trillion, twenty-one billion, two hundred two million, two hundred two thousand, three hundred twenty-one".