2221304512 has 56 divisors (see below), whose sum is σ = 5073985280. Its totient is φ = 945112320.

The previous prime is 2221304461. The next prime is 2221304531. The reversal of 2221304512 is 2154031222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44437 + ... + 80107.

It is an arithmetic number, because the mean of its divisors is an integer number (90606880).

Almost surely, 2^2221304512 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 2221304512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2536992640).

2221304512 is an abundant number, since it is smaller than the sum of its proper divisors (2852680768).

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

2221304512 is a wasteful number, since it uses less digits than its factorization.

2221304512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35829 (or 35819 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2221304512 is about 47130.7172871366. The cubic root of 2221304512 is about 1304.7762199533.

Adding to 2221304512 its reverse (2154031222), we get a palindrome (4375335734).

The spelling of 2221304512 in words is "two billion, two hundred twenty-one million, three hundred four thousand, five hundred twelve".