1323221133 has 16 divisors (see below), whose sum is σ = 1901419520. Its totient is φ = 813685824.

The previous prime is 1323221131. The next prime is 1323221147. The reversal of 1323221133 is 3311223231.

It is not a de Polignac number, because 1323221133 - 2¹ = 1323221131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323221131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43860 + ... + 67602.

It is an arithmetic number, because the mean of its divisors is an integer number (118838720).

Almost surely, 2^1323221133 is an apocalyptic number.

1323221133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1323221133 is a deficient number, since it is larger than the sum of its proper divisors (578198387).

1323221133 is a wasteful number, since it uses less digits than its factorization.

1323221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25188.

The product of its digits is 648, while the sum is 21.

The square root of 1323221133 is about 36376.1066223421. The cubic root of 1323221133 is about 1097.8528731104.

Adding to 1323221133 its reverse (3311223231), we get a palindrome (4634444364).

The spelling of 1323221133 in words is "one billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-three".