212004434400 has 288 divisors, whose sum is σ = 754939180800. Its totient is φ = 51249561600.

The previous prime is 212004434387. The next prime is 212004434419. The reversal of 212004434400 is 4434400212.

It is a happy number.

212004434400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9466416 + ... + 9488784.

It is an arithmetic number, because the mean of its divisors is an integer number (2621316600).

Almost surely, 2^212004434400 is an apocalyptic number.

212004434400 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 212004434400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377469590400).

212004434400 is an abundant number, since it is smaller than the sum of its proper divisors (542934746400).

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

212004434400 is a wasteful number, since it uses less digits than its factorization.

212004434400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22762 (or 22749 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 212004434400 its reverse (4434400212), we get a palindrome (216438834612).

The spelling of 212004434400 in words is "two hundred twelve billion, four million, four hundred thirty-four thousand, four hundred".