4195221 has 4 divisors (see below), whose sum is σ = 5593632. Its totient is φ = 2796812.

The previous prime is 4195211. The next prime is 4195229. The reversal of 4195221 is 1225914.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4195221 - 2⁵ = 4195189 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4195191 and 4195200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4195229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699201 + ... + 699206.

It is an arithmetic number, because the mean of its divisors is an integer number (1398408).

Almost surely, 2^4195221 is an apocalyptic number.

It is an amenable number.

4195221 is a deficient number, since it is larger than the sum of its proper divisors (1398411).

4195221 is a wasteful number, since it uses less digits than its factorization.

4195221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398410.

The product of its digits is 720, while the sum is 24.

The square root of 4195221 is about 2048.2238647179. The cubic root of 4195221 is about 161.2816463337.

The spelling of 4195221 in words is "four million, one hundred ninety-five thousand, two hundred twenty-one".