212120220211200 has 1728 divisors, whose sum is σ = 892422903153600. Its totient is φ = 47150058700800.

The previous prime is 212120220211187. The next prime is 212120220211247. The reversal of 212120220211200 is 2112022021212.

It is a happy number.

212120220211200 is a `hidden beast` number, since 2 + 1 + 212 + 0 + 220 + 211 + 20 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 17511776344 + ... + 17511788456.

It is an arithmetic number, because the mean of its divisors is an integer number (516448439325).

Almost surely, 2^{212120220211200} is an apocalyptic number.

212120220211200 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 212120220211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446211451576800).

212120220211200 is an abundant number, since it is smaller than the sum of its proper divisors (680302682942400).

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

212120220211200 is a wasteful number, since it uses less digits than its factorization.

212120220211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12308 (or 12280 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212120220211200 its reverse (2112022021212), we get a palindrome (214232242232412).

The spelling of 212120220211200 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twenty million, two hundred eleven thousand, two hundred".