212225504 has 48 divisors (see below), whose sum is σ = 433238400. Its totient is φ = 102228480.

The previous prime is 212225449. The next prime is 212225513. The reversal of 212225504 is 405522212.

It is a self number, because there is not a number n which added to its sum of digits gives 212225504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345902 + ... + 346514.

It is an arithmetic number, because the mean of its divisors is an integer number (9025800).

Almost surely, 2^212225504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212225504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216619200).

212225504 is an abundant number, since it is smaller than the sum of its proper divisors (221012896).

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

212225504 is a wasteful number, since it uses less digits than its factorization.

212225504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 212225504 is about 14567.9615595319. The cubic root of 212225504 is about 596.4845390813.

Adding to 212225504 its reverse (405522212), we get a palindrome (617747716).

The spelling of 212225504 in words is "two hundred twelve million, two hundred twenty-five thousand, five hundred four".