1322213312 has 56 divisors (see below), whose sum is σ = 3013862400. Its totient is φ = 563777280.

The previous prime is 1322213297. The next prime is 1322213317. The reversal of 1322213312 is 2133122231.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322213317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81737 + ... + 96567.

Almost surely, 2^1322213312 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 1322213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506931200).

1322213312 is an abundant number, since it is smaller than the sum of its proper divisors (1691649088).

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

1322213312 is a wasteful number, since it uses less digits than its factorization.

1322213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049 (or 15039 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1322213312 is about 36362.2511954362. The cubic root of 1322213312 is about 1097.5740786405.

Adding to 1322213312 its reverse (2133122231), we get a palindrome (3455335543).

The spelling of 1322213312 in words is "one billion, three hundred twenty-two million, two hundred thirteen thousand, three hundred twelve".