1322321 has 16 divisors (see below), whose sum is σ = 1776768. Its totient is φ = 950400.

The previous prime is 1322317. The next prime is 1322323. The reversal of 1322321 is 1232231.

It is a happy number.

It is not a de Polignac number, because 1322321 - 2² = 1322317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322296 and 1322305.

It is not an unprimeable number, because it can be changed into a prime (1322323) 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, 341 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (111048).

2^1322321 is an apocalyptic number.

1322321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1322321 is a deficient number, since it is larger than the sum of its proper divisors (454447).

1322321 is a wasteful number, since it uses less digits than its factorization.

1322321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 72, while the sum is 14.

The square root of 1322321 is about 1149.9221712794. The cubic root of 1322321 is about 109.7603875232.

Adding to 1322321 its reverse (1232231), we get a palindrome (2554552).

The spelling of 1322321 in words is "one million, three hundred twenty-two thousand, three hundred twenty-one".