2020100321021 has 2 divisors, whose sum is σ = 2020100321022. Its totient is φ = 2020100321020.

The previous prime is 2020100321009. The next prime is 2020100321027. The reversal of 2020100321021 is 1201230010202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1146856795396 + 873243525625 = 1070914^2 + 934475^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020100321021 - 2²⁶ = 2020033212157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2020100320987 and 2020100321005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020100321027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010050160510 + 1010050160511.

It is an arithmetic number, because the mean of its divisors is an integer number (1010050160511).

Almost surely, 2^{2020100321021} is an apocalyptic number.

It is an amenable number.

2020100321021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020100321021 is an equidigital number, since it uses as much as digits as its factorization.

2020100321021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 2020100321021 its reverse (1201230010202), we get a palindrome (3221330331223).

The spelling of 2020100321021 in words is "two trillion, twenty billion, one hundred million, three hundred twenty-one thousand, twenty-one".