212320332 has 144 divisors (see below), whose sum is σ = 653274720. Its totient is φ = 59439744.

The previous prime is 212320331. The next prime is 212320343. The reversal of 212320332 is 233023212.

It is a happy number.

212320332 is a `hidden beast` number, since 2 + 12 + 320 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212320331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280098 + ... + 280854.

It is an arithmetic number, because the mean of its divisors is an integer number (4536630).

Almost surely, 2^212320332 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 212320332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326637360).

212320332 is an abundant number, since it is smaller than the sum of its proper divisors (440954388).

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

212320332 is a wasteful number, since it uses less digits than its factorization.

212320332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 212320332 is about 14571.2158723972. The cubic root of 212320332 is about 596.5733675715.

Adding to 212320332 its reverse (233023212), we get a palindrome (445343544).

The spelling of 212320332 in words is "two hundred twelve million, three hundred twenty thousand, three hundred thirty-two".