212213012320 has 96 divisors (see below), whose sum is σ = 518997417120. Its totient is φ = 81901854720.

The previous prime is 212213012311. The next prime is 212213012351. The reversal of 212213012320 is 23210312212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7088904 + ... + 7118776.

It is an arithmetic number, because the mean of its divisors is an integer number (5406223095).

Almost surely, 2^212213012320 is an apocalyptic number.

212213012320 is a gapful number since it is divisible by the number (20) 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 212213012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259498708560).

212213012320 is an abundant number, since it is smaller than the sum of its proper divisors (306784404800).

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

212213012320 is a wasteful number, since it uses less digits than its factorization.

212213012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31448 (or 31440 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212213012320 its reverse (23210312212), we get a palindrome (235423324532).

The spelling of 212213012320 in words is "two hundred twelve billion, two hundred thirteen million, twelve thousand, three hundred twenty".