4221028512 has 72 divisors (see below), whose sum is σ = 12040086240. Its totient is φ = 1402727040.

The previous prime is 4221028501. The next prime is 4221028519. The reversal of 4221028512 is 2158201224.

4221028512 is a `hidden beast` number, since 42 + 2 + 102 + 8 + 512 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (4221028519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73189 + ... + 117467.

It is an arithmetic number, because the mean of its divisors is an integer number (167223420).

Almost surely, 2^4221028512 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 4221028512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6020043120).

4221028512 is an abundant number, since it is smaller than the sum of its proper divisors (7819057728).

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

4221028512 is a wasteful number, since it uses less digits than its factorization.

4221028512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44626 (or 44615 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 4221028512 is about 64969.4429097249. The cubic root of 4221028512 is about 1616.1168632606.

Adding to 4221028512 its reverse (2158201224), we get a palindrome (6379229736).

The spelling of 4221028512 in words is "four billion, two hundred twenty-one million, twenty-eight thousand, five hundred twelve".