7171222 has 4 divisors (see below), whose sum is σ = 10756836. Its totient is φ = 3585610.

The previous prime is 7171217. The next prime is 7171223. The reversal of 7171222 is 2221717.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2221717 = 79 ⋅28123.

It is a junction number, because it is equal to n+sod(n) for n = 7171193 and 7171202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7171223) 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 as a sum of consecutive naturals, namely, 1792804 + ... + 1792807.

It is an arithmetic number, because the mean of its divisors is an integer number (2689209).

Almost surely, 2^7171222 is an apocalyptic number.

7171222 is a deficient number, since it is larger than the sum of its proper divisors (3585614).

7171222 is a wasteful number, since it uses less digits than its factorization.

7171222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585613.

The product of its digits is 392, while the sum is 22.

The square root of 7171222 is about 2677.9137402090. The cubic root of 7171222 is about 192.8402662350.

Adding to 7171222 its reverse (2221717), we get a palindrome (9392939).

The spelling of 7171222 in words is "seven million, one hundred seventy-one thousand, two hundred twenty-two".