212321232320 has 56 divisors (see below), whose sum is σ = 509227378800. Its totient is φ = 84317478912.

The previous prime is 212321232317. The next prime is 212321232349. The reversal of 212321232320 is 23232123212.

212321232320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 2342225 + ... + 2431184.

It is an arithmetic number, because the mean of its divisors is an integer number (9093346050).

Almost surely, 2^212321232320 is an apocalyptic number.

212321232320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212321232320 is an abundant number, since it is smaller than the sum of its proper divisors (296906146480).

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

212321232320 is a wasteful number, since it uses less digits than its factorization.

212321232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4773565 (or 4773555 counting only the distinct ones).

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

Adding to 212321232320 its reverse (23232123212), we get a palindrome (235553355532).

The spelling of 212321232320 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred thirty-two thousand, three hundred twenty".