1322421320 has 32 divisors (see below), whose sum is σ = 3245944320. Its totient is φ = 480880320.

The previous prime is 1322421311. The next prime is 1322421341. The reversal of 1322421320 is 231242231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1322421292 and 1322421301.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1502312 + ... + 1503191.

It is an arithmetic number, because the mean of its divisors is an integer number (101435760).

Almost surely, 2^1322421320 is an apocalyptic number.

1322421320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322421320 is an abundant number, since it is smaller than the sum of its proper divisors (1923523000).

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

1322421320 is a wasteful number, since it uses less digits than its factorization.

1322421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005525 (or 3005521 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1322421320 is about 36365.1113019058. Note that the first 3 decimals coincide. The cubic root of 1322421320 is about 1097.6316316883.

Adding to 1322421320 its reverse (231242231), we get a palindrome (1553663551).

Subtracting from 1322421320 its reverse (231242231), we obtain a square (1091179089 = 33033²).

The spelling of 1322421320 in words is "one billion, three hundred twenty-two million, four hundred twenty-one thousand, three hundred twenty".