4221205 has 8 divisors (see below), whose sum is σ = 5099904. Its totient is φ = 3354000.

The previous prime is 4221197. The next prime is 4221209. The reversal of 4221205 is 5021224.

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

It is not a de Polignac number, because 4221205 - 2³ = 4221197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221209) 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, 2041 + ... + 3550.

It is an arithmetic number, because the mean of its divisors is an integer number (637488).

Almost surely, 2^4221205 is an apocalyptic number.

It is an amenable number.

4221205 is a deficient number, since it is larger than the sum of its proper divisors (878699).

4221205 is a wasteful number, since it uses less digits than its factorization.

4221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 4221205 is about 2054.5571298944. The cubic root of 4221205 is about 161.6139387096.

Adding to 4221205 its reverse (5021224), we get a palindrome (9242429).

The spelling of 4221205 in words is "four million, two hundred twenty-one thousand, two hundred five".