1322321221 has 16 divisors (see below), whose sum is σ = 1514007936. Its totient is φ = 1145491776.

The previous prime is 1322321219. The next prime is 1322321243. The reversal of 1322321221 is 1221232231.

It is not a de Polignac number, because 1322321221 - 2¹ = 1322321219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322321201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25875 + ... + 57568.

It is an arithmetic number, because the mean of its divisors is an integer number (94625496).

Almost surely, 2^1322321221 is an apocalyptic number.

It is an amenable number.

1322321221 is a deficient number, since it is larger than the sum of its proper divisors (191686715).

1322321221 is a wasteful number, since it uses less digits than its factorization.

1322321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83532.

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

The square root of 1322321221 is about 36363.7349704345. The cubic root of 1322321221 is about 1097.6039363794.

Adding to 1322321221 its reverse (1221232231), we get a palindrome (2543553452).

The spelling of 1322321221 in words is "one billion, three hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-one".