112212221 has 8 divisors (see below), whose sum is σ = 122810688.
Its totient is φ = 101680000.
The previous prime is 112212211. The next prime is 112212227. The reversal of 112212221 is 122212211.
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 112212221 - 218 = 111950077 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 112212196 and 112212205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (112212227) 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, 12980 + ... + 19821.
It is an arithmetic number, because the mean of its divisors is an integer number (15351336).
Almost surely, 2112212221 is an apocalyptic number.
112212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
112212221 is a deficient number, since it is larger than the sum of its proper divisors (10598467).
112212221 is a wasteful number, since it uses less digits than its factorization.
112212221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 33123.
The product of its digits is 32, while the sum is 14.
The square root of 112212221 is about 10593.0269989272.
The cubic root of 112212221 is about 482.3327147894.
Adding to 112212221 its reverse (122212211), we get a palindrome (234424432).
The spelling of 112212221 in words is "one hundred twelve million, two hundred twelve thousand, two hundred twenty-one".