112201221 has 16 divisors (see below), whose sum is σ = 164704320. Its totient is φ = 67374720.

The previous prime is 112201211. The next prime is 112201223. The reversal of 112201221 is 122102211.

It is not a de Polignac number, because 112201221 - 2⁵ = 112201189 is a prime.

It is a super-2 number, since 2×112201221² = 25178227987781682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112201197 and 112201206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12000 + ... + 19193.

It is an arithmetic number, because the mean of its divisors is an integer number (10294020).

Almost surely, 2^112201221 is an apocalyptic number.

112201221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112201221 is a deficient number, since it is larger than the sum of its proper divisors (52503099).

112201221 is a wasteful number, since it uses less digits than its factorization.

112201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31316.

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

The square root of 112201221 is about 10592.5077767260. The cubic root of 112201221 is about 482.3169534841.

Adding to 112201221 its reverse (122102211), we get a palindrome (234303432).

The spelling of 112201221 in words is "one hundred twelve million, two hundred one thousand, two hundred twenty-one".