4452221312 has 128 divisors (see below), whose sum is σ = 11091790080. Its totient is φ = 1729382400.

The previous prime is 4452221287. The next prime is 4452221321. The reversal of 4452221312 is 2131222544.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×4452221312² = 39644549222054002688, which contains 22 as substring.

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, 5489387 + ... + 5490197.

It is an arithmetic number, because the mean of its divisors is an integer number (86654610).

Almost surely, 2^4452221312 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 4452221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5545895040).

4452221312 is an abundant number, since it is smaller than the sum of its proper divisors (6639568768).

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

4452221312 is a wasteful number, since it uses less digits than its factorization.

4452221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1388 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 4452221312 is about 66724.9676807715. The cubic root of 4452221312 is about 1645.0997943295.

Adding to 4452221312 its reverse (2131222544), we get a palindrome (6583443856).

The spelling of 4452221312 in words is "four billion, four hundred fifty-two million, two hundred twenty-one thousand, three hundred twelve".