1112321321 has 2 divisors, whose sum is σ = 1112321322. Its totient is φ = 1112321320.

The previous prime is 1112321311. The next prime is 1112321333. The reversal of 1112321321 is 1231232111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 914215696 + 198105625 = 30236^2 + 14075^2 .

It is an emirp because it is prime and its reverse (1231232111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112321321 - 2⁶ = 1112321257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1112321321.

It is not a weakly prime, because it can be changed into another prime (1112321311) by changing a digit.

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 as a sum of consecutive naturals, namely, 556160660 + 556160661.

It is an arithmetic number, because the mean of its divisors is an integer number (556160661).

Almost surely, 2^1112321321 is an apocalyptic number.

It is an amenable number.

1112321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112321321 is an equidigital number, since it uses as much as digits as its factorization.

1112321321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 17.

The square root of 1112321321 is about 33351.4815413049. The cubic root of 1112321321 is about 1036.1200725581.

Adding to 1112321321 its reverse (1231232111), we get a palindrome (2343553432).

The spelling of 1112321321 in words is "one billion, one hundred twelve million, three hundred twenty-one thousand, three hundred twenty-one".