2021010111020 has 24 divisors (see below), whose sum is σ = 4342821728784. Its totient is φ = 789603950016.

The previous prime is 2021010111013. The next prime is 2021010111049. The reversal of 2021010111020 is 201110101202.

It is a junction number, because it is equal to n+sod(n) for n = 2021010110992 and 2021010111010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175005019 + ... + 1175006738.

It is an arithmetic number, because the mean of its divisors is an integer number (180950905366).

Almost surely, 2^{2021010111020} is an apocalyptic number.

2021010111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021010111020 is an abundant number, since it is smaller than the sum of its proper divisors (2321811617764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021010111020 is a wasteful number, since it uses less digits than its factorization.

2021010111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350011809 (or 2350011807 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021010111020 its reverse (201110101202), we get a palindrome (2222120212222).

The spelling of 2021010111020 in words is "two trillion, twenty-one billion, ten million, one hundred eleven thousand, twenty".