4221003220 has 24 divisors (see below), whose sum is σ = 10130408064. Its totient is φ = 1447201056.

The previous prime is 4221003191. The next prime is 4221003221. The reversal of 4221003220 is 223001224.

It is a junction number, because it is equal to n+sod(n) for n = 4221003194 and 4221003203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221003221) 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, 15074872 + ... + 15075151.

It is an arithmetic number, because the mean of its divisors is an integer number (422100336).

Almost surely, 2^4221003220 is an apocalyptic number.

It is an amenable number.

4221003220 is an abundant number, since it is smaller than the sum of its proper divisors (5909404844).

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

4221003220 is a wasteful number, since it uses less digits than its factorization.

4221003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30150039 (or 30150037 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4221003220 is about 64969.2482640826. The cubic root of 4221003220 is about 1616.1136353815.

Adding to 4221003220 its reverse (223001224), we get a palindrome (4444004444).

The spelling of 4221003220 in words is "four billion, two hundred twenty-one million, three thousand, two hundred twenty".