212000121200 has 120 divisors (see below), whose sum is σ = 590290790400. Its totient is φ = 71661945600.

The previous prime is 212000121181. The next prime is 212000121209. The reversal of 212000121200 is 2121000212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000121209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334400 + ... + 731999.

It is an arithmetic number, because the mean of its divisors is an integer number (4919089920).

Almost surely, 2^212000121200 is an apocalyptic number.

212000121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212000121200 is an abundant number, since it is smaller than the sum of its proper divisors (378290669200).

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

212000121200 is a wasteful number, since it uses less digits than its factorization.

212000121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066495 (or 1066484 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 212000121200 its reverse (2121000212), we get a palindrome (214121121412).

The spelling of 212000121200 in words is "two hundred twelve billion, one hundred twenty-one thousand, two hundred".