212211200220 has 48 divisors (see below), whose sum is σ = 594211500960. Its totient is φ = 56587735296.

The previous prime is 212211200189. The next prime is 212211200221. The reversal of 212211200220 is 22002112212.

212211200220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212211200220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211200221) 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 15 ways as a sum of consecutive naturals, for example, 3113466 + ... + 3180894.

It is an arithmetic number, because the mean of its divisors is an integer number (12379406270).

Almost surely, 2^212211200220 is an apocalyptic number.

212211200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211200220 is an abundant number, since it is smaller than the sum of its proper divisors (382000300740).

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

212211200220 is a wasteful number, since it uses less digits than its factorization.

212211200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119894 (or 119892 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212211200220 its reverse (22002112212), we get a palindrome (234213312432).

The spelling of 212211200220 in words is "two hundred twelve billion, two hundred eleven million, two hundred thousand, two hundred twenty".