212143300 has 18 divisors (see below), whose sum is σ = 460351178. Its totient is φ = 84857280.

The previous prime is 212143271. The next prime is 212143301. The reversal of 212143300 is 3341212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 207936 + 211935364 = 456^2 + 14558^2 .

It is not an unprimeable number, because it can be changed into a prime (212143301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1060617 + ... + 1060816.

Almost surely, 2^212143300 is an apocalyptic number.

212143300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212143300 is an abundant number, since it is smaller than the sum of its proper divisors (248207878).

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

212143300 is a wasteful number, since it uses less digits than its factorization.

212143300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121447 (or 2121440 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212143300 is about 14565.1398894758. The cubic root of 212143300 is about 596.4075144913.

Adding to 212143300 its reverse (3341212), we get a palindrome (215484512).

The spelling of 212143300 in words is "two hundred twelve million, one hundred forty-three thousand, three hundred".