200021212020 has 96 divisors (see below), whose sum is σ = 640512165888. Its totient is φ = 45687399552.

The previous prime is 200021212003. The next prime is 200021212031. The reversal of 200021212020 is 20212120002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 200021211987 and 200021212005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 443179 + ... + 772301.

It is an arithmetic number, because the mean of its divisors is an integer number (6672001728).

Almost surely, 2^200021212020 is an apocalyptic number.

200021212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021212020 is an abundant number, since it is smaller than the sum of its proper divisors (440490953868).

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

200021212020 is a wasteful number, since it uses less digits than its factorization.

200021212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330589 (or 330587 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200021212020 its reverse (20212120002), we get a palindrome (220233332022).

The spelling of 200021212020 in words is "two hundred billion, twenty-one million, two hundred twelve thousand, twenty".