2221329216 has 112 divisors (see below), whose sum is σ = 6303873600. Its totient is φ = 688177152.

The previous prime is 2221329193. The next prime is 2221329221. The reversal of 2221329216 is 6129231222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187600 + ... + 199088.

Almost surely, 2^2221329216 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 2221329216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3151936800).

2221329216 is an abundant number, since it is smaller than the sum of its proper divisors (4082544384).

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

2221329216 is a wasteful number, since it uses less digits than its factorization.

2221329216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11576 (or 11566 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 2221329216 is about 47130.9793660178. The cubic root of 2221329216 is about 1304.7810569116.

The spelling of 2221329216 in words is "two billion, two hundred twenty-one million, three hundred twenty-nine thousand, two hundred sixteen".