212544332 has 96 divisors (see below), whose sum is σ = 505021440. Its totient is φ = 75582720.

The previous prime is 212544331. The next prime is 212544341. The reversal of 212544332 is 233445212.

212544332 is digitally balanced in base 2 and base 3, because in such bases 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 (26).

It is not an unprimeable number, because it can be changed into a prime (212544331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436193 + ... + 436679.

It is an arithmetic number, because the mean of its divisors is an integer number (5260640).

Almost surely, 2^212544332 is an apocalyptic number.

212544332 is a gapful number since it is divisible by the number (22) 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 212544332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252510720).

212544332 is an abundant number, since it is smaller than the sum of its proper divisors (292477108).

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

212544332 is a wasteful number, since it uses less digits than its factorization.

212544332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 629 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 212544332 is about 14578.9002328708. The cubic root of 212544332 is about 596.7830907228.

Adding to 212544332 its reverse (233445212), we get a palindrome (445989544).

The spelling of 212544332 in words is "two hundred twelve million, five hundred forty-four thousand, three hundred thirty-two".