1321222326 has 16 divisors (see below), whose sum is σ = 2645926128. Its totient is φ = 439827200.

The previous prime is 1321222321. The next prime is 1321222349. The reversal of 1321222326 is 6232221231.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321222296 and 1321222305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321222321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140115 + ... + 149246.

It is an arithmetic number, because the mean of its divisors is an integer number (165370383).

Almost surely, 2^1321222326 is an apocalyptic number.

1321222326 is an abundant number, since it is smaller than the sum of its proper divisors (1324703802).

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

1321222326 is a wasteful number, since it uses less digits than its factorization.

1321222326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290127.

The product of its digits is 1728, while the sum is 24.

The square root of 1321222326 is about 36348.6220646670. The cubic root of 1321222326 is about 1097.2998030794.

Adding to 1321222326 its reverse (6232221231), we get a palindrome (7553443557).

The spelling of 1321222326 in words is "one billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred twenty-six".