212000220 has 48 divisors (see below), whose sum is σ = 659557920. Its totient is φ = 56533248.

The previous prime is 212000219. The next prime is 212000267. The reversal of 212000220 is 22000212.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195757 + ... + 196836.

It is an arithmetic number, because the mean of its divisors is an integer number (13740790).

Almost surely, 2^212000220 is an apocalyptic number.

212000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212000220 is an abundant number, since it is smaller than the sum of its proper divisors (447557700).

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

212000220 is a wasteful number, since it uses less digits than its factorization.

212000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392611 (or 392603 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 212000220 is about 14560.2273333901. The cubic root of 212000220 is about 596.2734020323.

Adding to 212000220 its reverse (22000212), we get a palindrome (234000432).

The spelling of 212000220 in words is "two hundred twelve million, two hundred twenty", and thus it is an aban number.