4435212221 has 8 divisors (see below), whose sum is σ = 4839367584. Its totient is φ = 4031215920.

The previous prime is 4435212169. The next prime is 4435212227. The reversal of 4435212221 is 1222125344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4435212221 - 2¹⁰ = 4435211197 is a prime.

It is a super-2 number, since 2×4435212221² = 39342214890615505682, which contains 22 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 (4435212227) 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, 22835 + ... + 96911.

It is an arithmetic number, because the mean of its divisors is an integer number (604920948).

Almost surely, 2^4435212221 is an apocalyptic number.

It is an amenable number.

4435212221 is a deficient number, since it is larger than the sum of its proper divisors (404155363).

4435212221 is a wasteful number, since it uses less digits than its factorization.

4435212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79531.

The product of its digits is 3840, while the sum is 26.

The square root of 4435212221 is about 66597.3889953653. The cubic root of 4435212221 is about 1643.0021626607.

Adding to 4435212221 its reverse (1222125344), we get a palindrome (5657337565).

The spelling of 4435212221 in words is "four billion, four hundred thirty-five million, two hundred twelve thousand, two hundred twenty-one".