112221021 has 8 divisors (see below), whose sum is σ = 163230624. Its totient is φ = 68012720.

The previous prime is 112221017. The next prime is 112221061. The reversal of 112221021 is 120122211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 112221021 - 2² = 112221017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112220988 and 112221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700286 + ... + 1700351.

It is an arithmetic number, because the mean of its divisors is an integer number (20403828).

Almost surely, 2^112221021 is an apocalyptic number.

112221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112221021 is a deficient number, since it is larger than the sum of its proper divisors (51009603).

112221021 is a wasteful number, since it uses less digits than its factorization.

112221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400651.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 112221021 is about 10593.4423583649. The cubic root of 112221021 is about 482.3453230921.

Adding to 112221021 its reverse (120122211), we get a palindrome (232343232).

The spelling of 112221021 in words is "one hundred twelve million, two hundred twenty-one thousand, twenty-one".