2021120202020 has 48 divisors (see below), whose sum is σ = 4250975904000. Its totient is φ = 807186858240.

The previous prime is 2021120202011. The next prime is 2021120202041. The reversal of 2021120202020 is 202020211202.

It is a super-2 number, since 2×2021120202020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021120201986 and 2021120202004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154880456 + ... + 154893504.

It is an arithmetic number, because the mean of its divisors is an integer number (88561998000).

Almost surely, 2^{2021120202020} is an apocalyptic number.

2021120202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021120202020 is an abundant number, since it is smaller than the sum of its proper divisors (2229855701980).

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

2021120202020 is a wasteful number, since it uses less digits than its factorization.

2021120202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24548 (or 24546 counting only the distinct ones).

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

Adding to 2021120202020 its reverse (202020211202), we get a palindrome (2223140413222).

The spelling of 2021120202020 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred two thousand, twenty".