2022201020821 has 2 divisors, whose sum is σ = 2022201020822. Its totient is φ = 2022201020820.

The previous prime is 2022201020809. The next prime is 2022201020839. The reversal of 2022201020821 is 1280201022202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2016360240196 + 5840780625 = 1419986^2 + 76425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022201020821 - 2¹⁷ = 2022200889749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2022201020792 and 2022201020801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2022201420821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011100510410 + 1011100510411.

It is an arithmetic number, because the mean of its divisors is an integer number (1011100510411).

Almost surely, 2^{2022201020821} is an apocalyptic number.

It is an amenable number.

2022201020821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022201020821 is an equidigital number, since it uses as much as digits as its factorization.

2022201020821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 22.

The spelling of 2022201020821 in words is "two trillion, twenty-two billion, two hundred one million, twenty thousand, eight hundred twenty-one".