4041221 has 4 divisors (see below), whose sum is σ = 4049472. Its totient is φ = 4032972.

The previous prime is 4041217. The next prime is 4041229. The reversal of 4041221 is 1221404.

4041221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4041221 - 2² = 4041217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4041196 and 4041205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4041229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3341 + ... + 4386.

It is an arithmetic number, because the mean of its divisors is an integer number (1012368).

Almost surely, 2^4041221 is an apocalyptic number.

It is an amenable number.

4041221 is a deficient number, since it is larger than the sum of its proper divisors (8251).

4041221 is an equidigital number, since it uses as much as digits as its factorization.

4041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4041221 is about 2010.2788363807. The cubic root of 4041221 is about 159.2835282361.

Adding to 4041221 its reverse (1221404), we get a palindrome (5262625).

The spelling of 4041221 in words is "four million, forty-one thousand, two hundred twenty-one".