1121321323 has 4 divisors (see below), whose sum is σ = 1170074448. Its totient is φ = 1072568200.

The previous prime is 1121321321. The next prime is 1121321351. The reversal of 1121321323 is 3231231211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1121321323 - 2¹ = 1121321321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121321323.

It is not an unprimeable number, because it can be changed into a prime (1121321321) 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 in 3 ways as a sum of consecutive naturals, for example, 24376528 + ... + 24376573.

It is an arithmetic number, because the mean of its divisors is an integer number (292518612).

Almost surely, 2^1121321323 is an apocalyptic number.

1121321323 is a deficient number, since it is larger than the sum of its proper divisors (48753125).

1121321323 is an equidigital number, since it uses as much as digits as its factorization.

1121321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48753124.

The product of its digits is 216, while the sum is 19.

The square root of 1121321323 is about 33486.1362805565. The cubic root of 1121321323 is about 1038.9070504638.

Adding to 1121321323 its reverse (3231231211), we get a palindrome (4352552534).

The spelling of 1121321323 in words is "one billion, one hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-three".