4221365712 has 80 divisors (see below), whose sum is σ = 11038436352. Its totient is φ = 1390007680.

The previous prime is 4221365683. The next prime is 4221365719. The reversal of 4221365712 is 2175631224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221365719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2212663 + ... + 2214569.

Almost surely, 2^4221365712 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 4221365712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5519218176).

4221365712 is an abundant number, since it is smaller than the sum of its proper divisors (6817070640).

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

4221365712 is a wasteful number, since it uses less digits than its factorization.

4221365712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456 (or 2450 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 4221365712 is about 64972.0379240177. The cubic root of 4221365712 is about 1616.1598970136.

Adding to 4221365712 its reverse (2175631224), we get a palindrome (6396996936).

The spelling of 4221365712 in words is "four billion, two hundred twenty-one million, three hundred sixty-five thousand, seven hundred twelve".