20220021020 has 48 divisors (see below), whose sum is σ = 43044798720. Its totient is φ = 7977678336.

The previous prime is 20220020999. The next prime is 20220021061. The reversal of 20220021020 is 2012002202.

It is a junction number, because it is equal to n+sod(n) for n = 20220020992 and 20220021010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465344 + ... + 506936.

It is an arithmetic number, because the mean of its divisors is an integer number (896766640).

Almost surely, 2^20220021020 is an apocalyptic number.

20220021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220021020 is an abundant number, since it is smaller than the sum of its proper divisors (22824777700).

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

20220021020 is a wasteful number, since it uses less digits than its factorization.

20220021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41934 (or 41932 counting only the distinct ones).

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

Adding to 20220021020 its reverse (2012002202), we get a palindrome (22232023222).

The spelling of 20220021020 in words is "twenty billion, two hundred twenty million, twenty-one thousand, twenty".