3221222112 has 36 divisors (see below), whose sum is σ = 9160351200. Its totient is φ = 1073740608.

The previous prime is 3221222099. The next prime is 3221222117. The reversal of 3221222112 is 2112221223.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221222117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5592112 + ... + 5592687.

It is an arithmetic number, because the mean of its divisors is an integer number (254454200).

Almost surely, 2^3221222112 is an apocalyptic number.

3221222112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3221222112 is an abundant number, since it is smaller than the sum of its proper divisors (5939129088).

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

3221222112 is a wasteful number, since it uses less digits than its factorization.

3221222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184815 (or 11184804 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 3221222112 is about 56755.8112619316. The cubic root of 3221222112 is about 1476.8630464984.

Adding to 3221222112 its reverse (2112221223), we get a palindrome (5333443335).

The spelling of 3221222112 in words is "three billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".