1323221244 has 48 divisors (see below), whose sum is σ = 3138508800. Its totient is φ = 433832256.

The previous prime is 1323221239. The next prime is 1323221279. The reversal of 1323221244 is 4421223231.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260077 + ... + 265115.

It is an arithmetic number, because the mean of its divisors is an integer number (65385600).

Almost surely, 2^1323221244 is an apocalyptic number.

It is an amenable number.

1323221244 is an abundant number, since it is smaller than the sum of its proper divisors (1815287556).

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

1323221244 is a wasteful number, since it uses less digits than its factorization.

1323221244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402 (or 5400 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1323221244 is about 36376.1081480688. The cubic root of 1323221244 is about 1097.8529038086.

Adding to 1323221244 its reverse (4421223231), we get a palindrome (5744444475).

The spelling of 1323221244 in words is "one billion, three hundred twenty-three million, two hundred twenty-one thousand, two hundred forty-four".