212020200020 has 96 divisors (see below), whose sum is σ = 465941548800. Its totient is φ = 80938497024.

The previous prime is 212020200019. The next prime is 212020200047. The reversal of 212020200020 is 20002020212.

It is a junction number, because it is equal to n+sod(n) for n = 212020199974 and 212020200010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18778817 + ... + 18790103.

It is an arithmetic number, because the mean of its divisors is an integer number (4853557800).

Almost surely, 2^212020200020 is an apocalyptic number.

212020200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212020200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232970774400).

212020200020 is an abundant number, since it is smaller than the sum of its proper divisors (253921348780).

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

212020200020 is a wasteful number, since it uses less digits than its factorization.

212020200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11697 (or 11695 counting only the distinct ones).

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

Adding to 212020200020 its reverse (20002020212), we get a palindrome (232022220232).

The spelling of 212020200020 in words is "two hundred twelve billion, twenty million, two hundred thousand, twenty".