7103221 has 4 divisors (see below), whose sum is σ = 7114912. Its totient is φ = 7091532.

The previous prime is 7103183. The next prime is 7103227. The reversal of 7103221 is 1223017.

It is a happy number.

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 7103221 - 2¹³ = 7095029 is a prime.

It is a Duffinian number.

7103221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7103195 and 7103204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7103227) 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, 4881 + ... + 6166.

It is an arithmetic number, because the mean of its divisors is an integer number (1778728).

Almost surely, 2^7103221 is an apocalyptic number.

It is an amenable number.

7103221 is a deficient number, since it is larger than the sum of its proper divisors (11691).

7103221 is a wasteful number, since it uses less digits than its factorization.

7103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 7103221 is about 2665.1868602408. The cubic root of 7103221 is about 192.2287944536.

Adding to 7103221 its reverse (1223017), we get a palindrome (8326238).

The spelling of 7103221 in words is "seven million, one hundred three thousand, two hundred twenty-one".