7220122 has 16 divisors (see below), whose sum is σ = 13329792. Its totient is φ = 2856240.

The previous prime is 7220113. The next prime is 7220123. The reversal of 7220122 is 2210227.

It is a junction number, because it is equal to n+sod(n) for n = 7220096 and 7220105.

It is not an unprimeable number, because it can be changed into a prime (7220123) 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 7 ways as a sum of consecutive naturals, for example, 19654 + ... + 20017.

It is an arithmetic number, because the mean of its divisors is an integer number (833112).

Almost surely, 2^7220122 is an apocalyptic number.

7220122 is a deficient number, since it is larger than the sum of its proper divisors (6109670).

7220122 is a wasteful number, since it uses less digits than its factorization.

7220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39693.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7220122 is about 2687.0284702623. The cubic root of 7220122 is about 193.2775945805.

Adding to 7220122 its reverse (2210227), we get a palindrome (9430349).

The spelling of 7220122 in words is "seven million, two hundred twenty thousand, one hundred twenty-two".