2112222320 has 80 divisors (see below), whose sum is σ = 5301223200. Its totient is φ = 778048512.

The previous prime is 2112222317. The next prime is 2112222323. The reversal of 2112222320 is 232222112.

It is an interprime number because it is at equal distance from previous prime (2112222317) and next prime (2112222323).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2112222320² = 8922966258212364800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112222323) by changing a digit.

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, 483506 + ... + 487854.

It is an arithmetic number, because the mean of its divisors is an integer number (66265290).

Almost surely, 2^2112222320 is an apocalyptic number.

2112222320 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 2112222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650611600).

2112222320 is an abundant number, since it is smaller than the sum of its proper divisors (3189000880).

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

2112222320 is a wasteful number, since it uses less digits than its factorization.

2112222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2112222320 is about 45958.9199176830. The cubic root of 2112222320 is about 1283.0587492971.

Adding to 2112222320 its reverse (232222112), we get a palindrome (2344444432).

The spelling of 2112222320 in words is "two billion, one hundred twelve million, two hundred twenty-two thousand, three hundred twenty".