2021202220001 has 2 divisors, whose sum is σ = 2021202220002. Its totient is φ = 2021202220000.

The previous prime is 2021202219989. The next prime is 2021202220007. The reversal of 2021202220001 is 1000222021202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1553413249600 + 467788970401 = 1246360^2 + 683951^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021202220001 - 2¹⁸ = 2021201957857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2021202220007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010601110000 + 1010601110001.

It is an arithmetic number, because the mean of its divisors is an integer number (1010601110001).

Almost surely, 2^{2021202220001} is an apocalyptic number.

It is an amenable number.

2021202220001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021202220001 is an equidigital number, since it uses as much as digits as its factorization.

2021202220001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2021202220001 its reverse (1000222021202), we get a palindrome (3021424241203).

The spelling of 2021202220001 in words is "two trillion, twenty-one billion, two hundred two million, two hundred twenty thousand, one".