212111212012200 has 144 divisors (see below), whose sum is σ = 712345323037920. Its totient is φ = 56562579400320.

The previous prime is 212111212012181. The next prime is 212111212012213. The reversal of 212111212012200 is 2210212111212.

212111212012200 is a `hidden beast` number, since 2 + 121 + 1 + 121 + 201 + 220 + 0 = 666.

It is a super-2 number, since 2×212111212012200² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 310452159 + ... + 311134641.

Almost surely, 2^{212111212012200} is an apocalyptic number.

212111212012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111212012200 is an abundant number, since it is smaller than the sum of its proper divisors (500234111025720).

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

212111212012200 is a wasteful number, since it uses less digits than its factorization.

212111212012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855168 (or 855156 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212111212012200 its reverse (2210212111212), we get a palindrome (214321424123412).

The spelling of 212111212012200 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, two hundred".