2020020011081 has 2 divisors, whose sum is σ = 2020020011082. Its totient is φ = 2020020011080.

The previous prime is 2020020011059. The next prime is 2020020011117. The reversal of 2020020011081 is 1801100200202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252440765625 + 767579245456 = 1119125^2 + 876116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020020011081 is a prime.

It is a super-3 number, since 3×2020020011081³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2020020014081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010010005540 + 1010010005541.

It is an arithmetic number, because the mean of its divisors is an integer number (1010010005541).

Almost surely, 2^{2020020011081} is an apocalyptic number.

It is an amenable number.

2020020011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020020011081 is an equidigital number, since it uses as much as digits as its factorization.

2020020011081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2020020011081 its reverse (1801100200202), we get a palindrome (3821120211283).

The spelling of 2020020011081 in words is "two trillion, twenty billion, twenty million, eleven thousand, eighty-one".