1101112321 has 4 divisors (see below), whose sum is σ = 1165883652. Its totient is φ = 1036340992.

The previous prime is 1101112319. The next prime is 1101112367. The reversal of 1101112321 is 1232111011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232111011 = 4073 ⋅302507.

It can be written as a sum of positive squares in 2 ways, for example, as 902161296 + 198951025 = 30036^2 + 14105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101112321 - 2¹ = 1101112319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101112021) 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, 32385640 + ... + 32385673.

It is an arithmetic number, because the mean of its divisors is an integer number (291470913).

Almost surely, 2^1101112321 is an apocalyptic number.

It is an amenable number.

1101112321 is a deficient number, since it is larger than the sum of its proper divisors (64771331).

1101112321 is an equidigital number, since it uses as much as digits as its factorization.

1101112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64771330.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1101112321 is about 33183.0125365374. The cubic root of 1101112321 is about 1032.6279457710.

Adding to 1101112321 its reverse (1232111011), we get a palindrome (2333223332).

It can be divided in two parts, 11011 and 12321, that multiplied together give a palindrome (135666531).

The spelling of 1101112321 in words is "one billion, one hundred one million, one hundred twelve thousand, three hundred twenty-one".