212220300 has 72 divisors (see below), whose sum is σ = 615960576. Its totient is φ = 56413760.

The previous prime is 212220259. The next prime is 212220313. The reversal of 212220300 is 3022212.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113977 + ... + 115823.

It is an arithmetic number, because the mean of its divisors is an integer number (8555008).

Almost surely, 2^212220300 is an apocalyptic number.

212220300 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 212220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307980288).

212220300 is an abundant number, since it is smaller than the sum of its proper divisors (403740276).

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

212220300 is a wasteful number, since it uses less digits than its factorization.

212220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247 (or 2240 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 212220300 is about 14567.7829473122. The cubic root of 212220300 is about 596.4796635584.

Adding to 212220300 its reverse (3022212), we get a palindrome (215242512).

It can be divided in two parts, 2122 and 20300, that added together give a palindrome (22422).

The spelling of 212220300 in words is "two hundred twelve million, two hundred twenty thousand, three hundred".