112220321 has 4 divisors (see below), whose sum is σ = 114957444. Its totient is φ = 109483200.

The previous prime is 112220309. The next prime is 112220333. The reversal of 112220321 is 123022211.

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: 123022211 = 13 ⋅9463247.

It is an interprime number because it is at equal distance from previous prime (112220309) and next prime (112220333).

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 94789696 = 4175^2 + 9736^2 .

It is a cyclic number.

It is not a de Polignac number, because 112220321 - 2¹⁰ = 112219297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112220296 and 112220305.

It is not an unprimeable number, because it can be changed into a prime (112220021) 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 3 ways as a sum of consecutive naturals, for example, 1368500 + ... + 1368581.

It is an arithmetic number, because the mean of its divisors is an integer number (28739361).

Almost surely, 2^112220321 is an apocalyptic number.

It is an amenable number.

112220321 is a deficient number, since it is larger than the sum of its proper divisors (2737123).

112220321 is an equidigital number, since it uses as much as digits as its factorization.

112220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737122.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 112220321 is about 10593.4093190059. The cubic root of 112220321 is about 482.3443201831.

Adding to 112220321 its reverse (123022211), we get a palindrome (235242532).

The spelling of 112220321 in words is "one hundred twelve million, two hundred twenty thousand, three hundred twenty-one".