212111011200 has 384 divisors, whose sum is σ = 788445964800. Its totient is φ = 49647001600.

The previous prime is 212111011127. The next prime is 212111011213. The reversal of 212111011200 is 2110111212.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3027769 + ... + 3097031.

It is an arithmetic number, because the mean of its divisors is an integer number (2053244700).

Almost surely, 2^212111011200 is an apocalyptic number.

212111011200 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 212111011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394222982400).

212111011200 is an abundant number, since it is smaller than the sum of its proper divisors (576334953600).

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

212111011200 is a wasteful number, since it uses less digits than its factorization.

212111011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69330 (or 69313 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212111011200 its reverse (2110111212), we get a palindrome (214221122412).

The spelling of 212111011200 in words is "two hundred twelve billion, one hundred eleven million, eleven thousand, two hundred".