212222232320 has 144 divisors (see below), whose sum is σ = 583173803520. Its totient is φ = 72484442112.

The previous prime is 212222232307. The next prime is 212222232373. The reversal of 212222232320 is 23232222212.

212222232320 is digitally balanced in base 3, 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2311451 + ... + 2401509.

It is an arithmetic number, because the mean of its divisors is an integer number (4049818080).

Almost surely, 2^212222232320 is an apocalyptic number.

212222232320 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 212222232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291586901760).

212222232320 is an abundant number, since it is smaller than the sum of its proper divisors (370951571200).

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

212222232320 is an equidigital number, since it uses as much as digits as its factorization.

212222232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90350 (or 90336 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 212222232320 its reverse (23232222212), we get a palindrome (235454454532).

The spelling of 212222232320 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred thirty-two thousand, three hundred twenty".