112213021 has 4 divisors (see below), whose sum is σ = 117091872. Its totient is φ = 107334172.

The previous prime is 112213019. The next prime is 112213037. The reversal of 112213021 is 120312211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120312211 = 331 ⋅363481.

It is a cyclic number.

It is not a de Polignac number, because 112213021 - 2¹ = 112213019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112212992 and 112213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112213051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2439391 + ... + 2439436.

It is an arithmetic number, because the mean of its divisors is an integer number (29272968).

Almost surely, 2^112213021 is an apocalyptic number.

It is an amenable number.

112213021 is a deficient number, since it is larger than the sum of its proper divisors (4878851).

112213021 is an equidigital number, since it uses as much as digits as its factorization.

112213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878850.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 112213021 is about 10593.0647595491. The cubic root of 112213021 is about 482.3338610260. Note that the first 3 decimals are identical.

Adding to 112213021 its reverse (120312211), we get a palindrome (232525232).

The spelling of 112213021 in words is "one hundred twelve million, two hundred thirteen thousand, twenty-one".