111453321 has 16 divisors (see below), whose sum is σ = 170006528. Its totient is φ = 63622800.

The previous prime is 111453317. The next prime is 111453337. The reversal of 111453321 is 123354111.

It is not a de Polignac number, because 111453321 - 2² = 111453317 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111453421) 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 15 ways as a sum of consecutive naturals, for example, 25056 + ... + 29166.

It is an arithmetic number, because the mean of its divisors is an integer number (10625408).

Almost surely, 2^111453321 is an apocalyptic number.

It is an amenable number.

111453321 is a deficient number, since it is larger than the sum of its proper divisors (58553207).

111453321 is a wasteful number, since it uses less digits than its factorization.

111453321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412.

The product of its digits is 360, while the sum is 21.

The square root of 111453321 is about 10557.1454948769. The cubic root of 111453321 is about 481.2429030044.

The spelling of 111453321 in words is "one hundred eleven million, four hundred fifty-three thousand, three hundred twenty-one".