4231221252 has 48 divisors (see below), whose sum is σ = 10028992512. Its totient is φ = 1388138400.

The previous prime is 4231221233. The next prime is 4231221257. The reversal of 4231221252 is 2521221324.

It is not an unprimeable number, because it can be changed into a prime (4231221257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1657377 + ... + 1659927.

It is an arithmetic number, because the mean of its divisors is an integer number (208937344).

Almost surely, 2^4231221252 is an apocalyptic number.

It is an amenable number.

4231221252 is an abundant number, since it is smaller than the sum of its proper divisors (5797771260).

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

4231221252 is a wasteful number, since it uses less digits than its factorization.

4231221252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688 (or 4686 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 4231221252 is about 65047.8381808343. The cubic root of 4231221252 is about 1617.4166584469.

Adding to 4231221252 its reverse (2521221324), we get a palindrome (6752442576).

The spelling of 4231221252 in words is "four billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred fifty-two".