2020111102021 has 2 divisors, whose sum is σ = 2020111102022. Its totient is φ = 2020111102020.

The previous prime is 2020111102013. The next prime is 2020111102033. The reversal of 2020111102021 is 1202011110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1983548308225 + 36562793796 = 1408385^2 + 191214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020111102021 - 2³ = 2020111102013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2020111101992 and 2020111102010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020111109021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010055551010 + 1010055551011.

It is an arithmetic number, because the mean of its divisors is an integer number (1010055551011).

Almost surely, 2^{2020111102021} is an apocalyptic number.

It is an amenable number.

2020111102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020111102021 is an equidigital number, since it uses as much as digits as its factorization.

2020111102021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2020111102021 its reverse (1202011110202), we get a palindrome (3222122212223).

The spelling of 2020111102021 in words is "two trillion, twenty billion, one hundred eleven million, one hundred two thousand, twenty-one".