1321224032 has 12 divisors (see below), whose sum is σ = 2601159876. Its totient is φ = 660612000.

The previous prime is 1321224031. The next prime is 1321224041. The reversal of 1321224032 is 2304221231.

It is a junction number, because it is equal to n+sod(n) for n = 1321223995 and 1321224013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321224031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20644094 + ... + 20644157.

It is an arithmetic number, because the mean of its divisors is an integer number (216763323).

Almost surely, 2^1321224032 is an apocalyptic number.

It is an amenable number.

1321224032 is a deficient number, since it is larger than the sum of its proper divisors (1279935844).

1321224032 is an equidigital number, since it uses as much as digits as its factorization.

1321224032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41288261 (or 41288253 counting only the distinct ones).

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

The square root of 1321224032 is about 36348.6455318489. The cubic root of 1321224032 is about 1097.3002753674.

Adding to 1321224032 its reverse (2304221231), we get a palindrome (3625445263).

The spelling of 1321224032 in words is "one billion, three hundred twenty-one million, two hundred twenty-four thousand, thirty-two".