220001112 has 96 divisors (see below), whose sum is σ = 616215600. Its totient is φ = 70854912.

The previous prime is 220001059. The next prime is 220001113. The reversal of 220001112 is 211100022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 220001094 and 220001103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 716463 + ... + 716769.

Almost surely, 2^220001112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308107800).

220001112 is an abundant number, since it is smaller than the sum of its proper divisors (396214488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220001112 is a wasteful number, since it uses less digits than its factorization.

220001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 220001112 is about 14832.4344596563. The cubic root of 220001112 is about 603.6820907892.

Adding to 220001112 its reverse (211100022), we get a palindrome (431101134).

The spelling of 220001112 in words is "two hundred twenty million, one thousand, one hundred twelve".