212021323320 has 64 divisors (see below), whose sum is σ = 636237349920. Its totient is φ = 56523608064.

The previous prime is 212021323271. The next prime is 212021323351. The reversal of 212021323320 is 23323120212.

It is a happy number.

212021323320 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 15 ways as a sum of consecutive naturals, for example, 204684 + ... + 682596.

Almost surely, 2^212021323320 is an apocalyptic number.

212021323320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021323320 is an abundant number, since it is smaller than the sum of its proper divisors (424216026600).

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

212021323320 is a wasteful number, since it uses less digits than its factorization.

212021323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481624 (or 481620 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212021323320 its reverse (23323120212), we get a palindrome (235344443532).

The spelling of 212021323320 in words is "two hundred twelve billion, twenty-one million, three hundred twenty-three thousand, three hundred twenty".