2212112320 has 84 divisors (see below), whose sum is σ = 5790099672. Its totient is φ = 804390400.

The previous prime is 2212112299. The next prime is 2212112323. The reversal of 2212112320 is 232112122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2212112294 and 2212112303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212112323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10155 + ... + 67285.

It is an arithmetic number, because the mean of its divisors is an integer number (68929758).

Almost surely, 2^2212112320 is an apocalyptic number.

2212112320 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 2212112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2895049836).

2212112320 is an abundant number, since it is smaller than the sum of its proper divisors (3577987352).

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

2212112320 is a wasteful number, since it uses less digits than its factorization.

2212112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57170 (or 57149 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2212112320 is about 47033.0981331232. The cubic root of 2212112320 is about 1302.9739252849.

Adding to 2212112320 its reverse (232112122), we get a palindrome (2444224442).

The spelling of 2212112320 in words is "two billion, two hundred twelve million, one hundred twelve thousand, three hundred twenty".