212201220020 has 12 divisors (see below), whose sum is σ = 445622562084. Its totient is φ = 84880488000.

The previous prime is 212201220013. The next prime is 212201220029. The reversal of 212201220020 is 20022102212.

212201220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 169470542224 + 42730677796 = 411668^2 + 206714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212201219977 and 212201220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201220029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5305030481 + ... + 5305030520.

It is an arithmetic number, because the mean of its divisors is an integer number (37135213507).

Almost surely, 2^212201220020 is an apocalyptic number.

212201220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212201220020 is an abundant number, since it is smaller than the sum of its proper divisors (233421342064).

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

212201220020 is a wasteful number, since it uses less digits than its factorization.

212201220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10610061010 (or 10610061008 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212201220020 its reverse (20022102212), we get a palindrome (232223322232).

The spelling of 212201220020 in words is "two hundred twelve billion, two hundred one million, two hundred twenty thousand, twenty".