4102221 has 8 divisors (see below), whose sum is σ = 5503840. Its totient is φ = 2717712.

The previous prime is 4102193. The next prime is 4102223. The reversal of 4102221 is 1222014.

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

It is not a de Polignac number, because 4102221 - 2¹⁰ = 4101197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4102197 and 4102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4102223) 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, 3706 + ... + 4683.

It is an arithmetic number, because the mean of its divisors is an integer number (687980).

Almost surely, 2^4102221 is an apocalyptic number.

It is an amenable number.

4102221 is a deficient number, since it is larger than the sum of its proper divisors (1401619).

4102221 is a wasteful number, since it uses less digits than its factorization.

4102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 4102221 is about 2025.3940357372. The cubic root of 4102221 is about 160.0809616298.

Adding to 4102221 its reverse (1222014), we get a palindrome (5324235).

The spelling of 4102221 in words is "four million, one hundred two thousand, two hundred twenty-one".