1322321004 has 96 divisors (see below), whose sum is σ = 3581760000. Its totient is φ = 421339968.

The previous prime is 1322320999. The next prime is 1322321023. The reversal of 1322321004 is 4001232231.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 31 ways as a sum of consecutive naturals, for example, 320547 + ... + 324645.

It is an arithmetic number, because the mean of its divisors is an integer number (37310000).

Almost surely, 2^1322321004 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 1322321004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790880000).

1322321004 is an abundant number, since it is smaller than the sum of its proper divisors (2259438996).

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

1322321004 is a wasteful number, since it uses less digits than its factorization.

1322321004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4244 (or 4236 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1322321004 is about 36363.7319866925. The cubic root of 1322321004 is about 1097.6038763385.

Adding to 1322321004 its reverse (4001232231), we get a palindrome (5323553235).

The spelling of 1322321004 in words is "one billion, three hundred twenty-two million, three hundred twenty-one thousand, four".