2122321312 has 12 divisors (see below), whose sum is σ = 4178320146. Its totient is φ = 1061160640.

The previous prime is 2122321303. The next prime is 2122321319. The reversal of 2122321312 is 2131232212.

It can be written as a sum of positive squares in only one way, i.e., 1205200656 + 917120656 = 34716^2 + 30284^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2122321312.

It is not an unprimeable number, because it can be changed into a prime (2122321319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33161239 + ... + 33161302.

Almost surely, 2^2122321312 is an apocalyptic number.

It is an amenable number.

2122321312 is a deficient number, since it is larger than the sum of its proper divisors (2055998834).

2122321312 is an equidigital number, since it uses as much as digits as its factorization.

2122321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66322551 (or 66322543 counting only the distinct ones).

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

The square root of 2122321312 is about 46068.6586737665. The cubic root of 2122321312 is about 1285.1003594647.

Adding to 2122321312 its reverse (2131232212), we get a palindrome (4253553524).

The spelling of 2122321312 in words is "two billion, one hundred twenty-two million, three hundred twenty-one thousand, three hundred twelve".