20202021020 has 48 divisors (see below), whose sum is σ = 45348545088. Its totient is φ = 7540938240.

The previous prime is 20202021019. The next prime is 20202021071. The reversal of 20202021020 is 2012020202.

It is a junction number, because it is equal to n+sod(n) for n = 20202020992 and 20202021010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516719 + ... + 554438.

It is an arithmetic number, because the mean of its divisors is an integer number (944761356).

Almost surely, 2^20202021020 is an apocalyptic number.

20202021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202021020 is an abundant number, since it is smaller than the sum of its proper divisors (25146524068).

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

20202021020 is a wasteful number, since it uses less digits than its factorization.

20202021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071230 (or 1071228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20202021020 its reverse (2012020202), we get a palindrome (22214041222).

The spelling of 20202021020 in words is "twenty billion, two hundred two million, twenty-one thousand, twenty".