4221441252 has 96 divisors (see below), whose sum is σ = 13051852800. Its totient is φ = 1153681056.

The previous prime is 4221441247. The next prime is 4221441293. The reversal of 4221441252 is 2521441224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104002 + ... + 138777.

It is an arithmetic number, because the mean of its divisors is an integer number (135956800).

Almost surely, 2^4221441252 is an apocalyptic number.

4221441252 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4221441252 is an abundant number, since it is smaller than the sum of its proper divisors (8830411548).

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

4221441252 is a wasteful number, since it uses less digits than its factorization.

4221441252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242822 (or 242814 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 4221441252 is about 64972.6192484188. The cubic root of 4221441252 is about 1616.1695371790.

Adding to 4221441252 its reverse (2521441224), we get a palindrome (6742882476).

The spelling of 4221441252 in words is "four billion, two hundred twenty-one million, four hundred forty-one thousand, two hundred fifty-two".