212133344 has 48 divisors (see below), whose sum is σ = 453037536. Its totient is φ = 97382400.

The previous prime is 212133331. The next prime is 212133367. The reversal of 212133344 is 443331212.

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, 17549 + ... + 27059.

It is an arithmetic number, because the mean of its divisors is an integer number (9438282).

Almost surely, 2^212133344 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 212133344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226518768).

212133344 is an abundant number, since it is smaller than the sum of its proper divisors (240904192).

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

212133344 is a wasteful number, since it uses less digits than its factorization.

212133344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579 (or 9571 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 212133344 is about 14564.7981105129. The cubic root of 212133344 is about 596.3981844361.

Adding to 212133344 its reverse (443331212), we get a palindrome (655464556).

The spelling of 212133344 in words is "two hundred twelve million, one hundred thirty-three thousand, three hundred forty-four".