9361221 has 4 divisors (see below), whose sum is σ = 12481632. Its totient is φ = 6240812.

The previous prime is 9361217. The next prime is 9361249. The reversal of 9361221 is 1221639.

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 9361221 - 2² = 9361217 is a prime.

It is a super-2 number, since 2×9361221² = 175264917221682, which contains 22 as substring.

9361221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9361191 and 9361200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9361211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1560201 + ... + 1560206.

It is an arithmetic number, because the mean of its divisors is an integer number (3120408).

Almost surely, 2^9361221 is an apocalyptic number.

It is an amenable number.

9361221 is a deficient number, since it is larger than the sum of its proper divisors (3120411).

9361221 is a wasteful number, since it uses less digits than its factorization.

9361221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120410.

The product of its digits is 648, while the sum is 24.

The square root of 9361221 is about 3059.6112498159. The cubic root of 9361221 is about 210.7548120407.

The spelling of 9361221 in words is "nine million, three hundred sixty-one thousand, two hundred twenty-one".