9041221 has 4 divisors (see below), whose sum is σ = 10332832. Its totient is φ = 7749612.

The previous prime is 9041203. The next prime is 9041261. The reversal of 9041221 is 1221409.

9041221 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, and also an emirpimes, since its reverse is a distinct semiprime: 1221409 = 7 ⋅174487.

It is a cyclic number.

It is not a de Polignac number, because 9041221 - 2⁵ = 9041189 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 (9041261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645795 + ... + 645808.

It is an arithmetic number, because the mean of its divisors is an integer number (2583208).

Almost surely, 2^9041221 is an apocalyptic number.

It is an amenable number.

9041221 is a deficient number, since it is larger than the sum of its proper divisors (1291611).

9041221 is a wasteful number, since it uses less digits than its factorization.

9041221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291610.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 9041221 is about 3006.8623180984. The cubic root of 9041221 is about 208.3254658718.

The spelling of 9041221 in words is "nine million, forty-one thousand, two hundred twenty-one".