11112321 has 32 divisors (see below), whose sum is σ = 17510400. Its totient is φ = 6194880.

The previous prime is 11112319. The next prime is 11112329. The reversal of 11112321 is 12321111.

It is not a de Polignac number, because 11112321 - 2¹ = 11112319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112297 and 11112306.

It is not an unprimeable number, because it can be changed into a prime (11112329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22960 + ... + 23438.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^11112321 is an apocalyptic number.

11112321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11112321 is a deficient number, since it is larger than the sum of its proper divisors (6398079).

11112321 is a wasteful number, since it uses less digits than its factorization.

11112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its digits is 12, while the sum is 12.

The square root of 11112321 is about 3333.5148117265. The cubic root of 11112321 is about 223.1524157950.

Adding to 11112321 its reverse (12321111), we get a palindrome (23433432).

It can be divided in two parts, 111 and 12321, that multiplied together give a palindrome (1367631).

The spelling of 11112321 in words is "eleven million, one hundred twelve thousand, three hundred twenty-one".