1321412321 has 8 divisors (see below), whose sum is σ = 1344492000. Its totient is φ = 1298355520.

The previous prime is 1321412303. The next prime is 1321412357. The reversal of 1321412321 is 1232141231.

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 1321412321 - 2¹⁴ = 1321395937 is a prime.

It is a super-2 number, since 2×1321412321² = 3492261044181214082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321412293 and 1321412302.

It is not an unprimeable number, because it can be changed into a prime (1321412021) 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, 144905 + ... + 153753.

It is an arithmetic number, because the mean of its divisors is an integer number (168061500).

Almost surely, 2^1321412321 is an apocalyptic number.

It is an amenable number.

1321412321 is a deficient number, since it is larger than the sum of its proper divisors (23079679).

1321412321 is an equidigital number, since it uses as much as digits as its factorization.

1321412321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439.

The product of its digits is 288, while the sum is 20.

The square root of 1321412321 is about 36351.2354810672. The cubic root of 1321412321 is about 1097.3523986896.

Adding to 1321412321 its reverse (1232141231), we get a palindrome (2553553552).

The spelling of 1321412321 in words is "one billion, three hundred twenty-one million, four hundred twelve thousand, three hundred twenty-one".