201220002020 has 48 divisors (see below), whose sum is σ = 443639548800. Its totient is φ = 76516171776.

The previous prime is 201220001971. The next prime is 201220002077. The reversal of 201220002020 is 20200022102.

201220002020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 201220001992 and 201220002010.

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, 1266845 + ... + 1416804.

It is an arithmetic number, because the mean of its divisors is an integer number (9242490600).

Almost surely, 2^201220002020 is an apocalyptic number.

201220002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201220002020 is an abundant number, since it is smaller than the sum of its proper divisors (242419546780).

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

201220002020 is a wasteful number, since it uses less digits than its factorization.

201220002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683844 (or 2683842 counting only the distinct ones).

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

Adding to 201220002020 its reverse (20200022102), we get a palindrome (221420024122).

The spelling of 201220002020 in words is "two hundred one billion, two hundred twenty million, two thousand, twenty".