2120222312 has 48 divisors (see below), whose sum is σ = 4518484740. Its totient is φ = 927044352.

The previous prime is 2120222309. The next prime is 2120222353. The reversal of 2120222312 is 2132220212.

It can be written as a sum of positive squares in 2 ways, for example, as 2103689956 + 16532356 = 45866^2 + 4066^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9308 + ... + 65780.

Almost surely, 2^2120222312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120222312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2259242370).

2120222312 is an abundant number, since it is smaller than the sum of its proper divisors (2398262428).

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

2120222312 is a wasteful number, since it uses less digits than its factorization.

2120222312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56530 (or 56507 counting only the distinct ones).

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

The square root of 2120222312 is about 46045.8718236499. The cubic root of 2120222312 is about 1284.6765600790.

Adding to 2120222312 its reverse (2132220212), we get a palindrome (4252442524).

The spelling of 2120222312 in words is "two billion, one hundred twenty million, two hundred twenty-two thousand, three hundred twelve".