1344221321 has 8 divisors (see below), whose sum is σ = 1349329440. Its totient is φ = 1339123968.

The previous prime is 1344221309. The next prime is 1344221353. The reversal of 1344221321 is 1231224431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1344221321 - 2¹⁴ = 1344204937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1344221371) 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, 313490 + ... + 317748.

It is an arithmetic number, because the mean of its divisors is an integer number (168666180).

Almost surely, 2^1344221321 is an apocalyptic number.

It is an amenable number.

1344221321 is a deficient number, since it is larger than the sum of its proper divisors (5108119).

1344221321 is an equidigital number, since it uses as much as digits as its factorization.

1344221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its digits is 1152, while the sum is 23.

The square root of 1344221321 is about 36663.6239479951. The cubic root of 1344221321 is about 1103.6302434040.

Adding to 1344221321 its reverse (1231224431), we get a palindrome (2575445752).

The spelling of 1344221321 in words is "one billion, three hundred forty-four million, two hundred twenty-one thousand, three hundred twenty-one".