112123221 has 12 divisors (see below), whose sum is σ = 173905632. Its totient is φ = 64070328.

The previous prime is 112123213. The next prime is 112123223. The reversal of 112123221 is 122321211.

It is not a de Polignac number, because 112123221 - 2³ = 112123213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112123223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 381225 + ... + 381518.

It is an arithmetic number, because the mean of its divisors is an integer number (14492136).

Almost surely, 2^112123221 is an apocalyptic number.

It is an amenable number.

112123221 is a deficient number, since it is larger than the sum of its proper divisors (61782411).

112123221 is an equidigital number, since it uses as much as digits as its factorization.

112123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762760 (or 762753 counting only the distinct ones).

The product of its digits is 48, while the sum is 15.

The square root of 112123221 is about 10588.8252889544. The cubic root of 112123221 is about 482.2051619393.

Adding to 112123221 its reverse (122321211), we get a palindrome (234444432).

It can be divided in two parts, 1121232 and 21, that added together give a triangular number (1121253 = T₁₄₉₇).

The spelling of 112123221 in words is "one hundred twelve million, one hundred twenty-three thousand, two hundred twenty-one".