4200221 has 8 divisors (see below), whose sum is σ = 4368384. Its totient is φ = 4034160.

The previous prime is 4200211. The next prime is 4200223. The reversal of 4200221 is 1220024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4200221 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 (4200223) 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, 4436 + ... + 5298.

It is an arithmetic number, because the mean of its divisors is an integer number (546048).

Almost surely, 2^4200221 is an apocalyptic number.

It is an amenable number.

4200221 is a deficient number, since it is larger than the sum of its proper divisors (168163).

4200221 is a wasteful number, since it uses less digits than its factorization.

4200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 4200221 is about 2049.4440709617. Note that the first 3 decimals coincide. The cubic root of 4200221 is about 161.3456944554.

Adding to 4200221 its reverse (1220024), we get a palindrome (5420245).

The spelling of 4200221 in words is "four million, two hundred thousand, two hundred twenty-one".