4231221024 has 48 divisors (see below), whose sum is σ = 11139998688. Its totient is φ = 1406211072.

The previous prime is 4231221023. The next prime is 4231221037. The reversal of 4231221024 is 4201221324.

4231221024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (4231221023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33042 + ... + 97745.

It is an arithmetic number, because the mean of its divisors is an integer number (232083306).

Almost surely, 2^4231221024 is an apocalyptic number.

It is an amenable number.

4231221024 is an abundant number, since it is smaller than the sum of its proper divisors (6908777664).

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

4231221024 is a wasteful number, since it uses less digits than its factorization.

4231221024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131137 (or 131129 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4231221024 is about 65047.8364282779. The cubic root of 4231221024 is about 1617.4166293953.

Adding to 4231221024 its reverse (4201221324), we get a palindrome (8432442348).

It can be divided in two parts, 42312 and 21024, that added together give a palindrome (63336).

The spelling of 4231221024 in words is "four billion, two hundred thirty-one million, two hundred twenty-one thousand, twenty-four".