7223122 has 4 divisors (see below), whose sum is σ = 10834686. Its totient is φ = 3611560.

The previous prime is 7223119. The next prime is 7223123. The reversal of 7223122 is 2213227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2213227 = 53 ⋅41759.

It can be written as a sum of positive squares in only one way, i.e., 6245001 + 978121 = 2499^2 + 989^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7223122.

It is not an unprimeable number, because it can be changed into a prime (7223123) 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, 1805779 + ... + 1805782.

Almost surely, 2^7223122 is an apocalyptic number.

7223122 is a deficient number, since it is larger than the sum of its proper divisors (3611564).

7223122 is a wasteful number, since it uses less digits than its factorization.

7223122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611563.

The product of its digits is 336, while the sum is 19.

The square root of 7223122 is about 2687.5866497659. The cubic root of 7223122 is about 193.3043601714.

Adding to 7223122 its reverse (2213227), we get a palindrome (9436349).

It can be divided in two parts, 722 and 3122, that added together give a square (3844 = 62²).

The spelling of 7223122 in words is "seven million, two hundred twenty-three thousand, one hundred twenty-two".