1321441223 has 4 divisors (see below), whose sum is σ = 1331846400. Its totient is φ = 1311036048.

The previous prime is 1321441207. The next prime is 1321441271. The reversal of 1321441223 is 3221441231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221441231 = 17 ⋅189496543.

It is a cyclic number.

It is not a de Polignac number, because 1321441223 - 2⁴ = 1321441207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321440223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5202398 + ... + 5202651.

It is an arithmetic number, because the mean of its divisors is an integer number (332961600).

Almost surely, 2^1321441223 is an apocalyptic number.

1321441223 is a deficient number, since it is larger than the sum of its proper divisors (10405177).

1321441223 is a wasteful number, since it uses less digits than its factorization.

1321441223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10405176.

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

The square root of 1321441223 is about 36351.6330169636. The cubic root of 1321441223 is about 1097.3603990811.

Adding to 1321441223 its reverse (3221441231), we get a palindrome (4542882454).

The spelling of 1321441223 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, two hundred twenty-three".