4221220222 has 16 divisors (see below), whose sum is σ = 6834961440. Its totient is φ = 1949228512.

The previous prime is 4221220217. The next prime is 4221220271. The reversal of 4221220222 is 2220221224.

It is a self number, because there is not a number n which added to its sum of digits gives 4221220222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580833 + ... + 1583500.

It is an arithmetic number, because the mean of its divisors is an integer number (427185090).

Almost surely, 2^4221220222 is an apocalyptic number.

4221220222 is a deficient number, since it is larger than the sum of its proper divisors (2613741218).

4221220222 is a wasteful number, since it uses less digits than its factorization.

4221220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164387.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 4221220222 is about 64970.9182788730. The cubic root of 4221220222 is about 1616.1413297362.

Adding to 4221220222 its reverse (2220221224), we get a palindrome (6441441446).

The spelling of 4221220222 in words is "four billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".