4402211221 has 4 divisors (see below), whose sum is σ = 4403280492. Its totient is φ = 4401141952.

The previous prime is 4402211189. The next prime is 4402211239. The reversal of 4402211221 is 1221122044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3385494225 + 1016716996 = 58185^2 + 31886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4402211221 - 2⁵ = 4402211189 is a prime.

It is a super-3 number, since 3×4402211221³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4402211291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528436 + ... + 536701.

It is an arithmetic number, because the mean of its divisors is an integer number (1100820123).

Almost surely, 2^4402211221 is an apocalyptic number.

It is an amenable number.

4402211221 is a deficient number, since it is larger than the sum of its proper divisors (1069271).

4402211221 is a wasteful number, since it uses less digits than its factorization.

4402211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069270.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4402211221 is about 66349.1614189660. The cubic root of 4402211221 is about 1638.9169952913.

Adding to 4402211221 its reverse (1221122044), we get a palindrome (5623333265).

The spelling of 4402211221 in words is "four billion, four hundred two million, two hundred eleven thousand, two hundred twenty-one".