7220112 has 40 divisors (see below), whose sum is σ = 18748800. Its totient is φ = 2394240.

The previous prime is 7220111. The next prime is 7220113. The reversal of 7220112 is 2110227.

It is an interprime number because it is at equal distance from previous prime (7220111) and next prime (7220113).

It is a super-3 number, since 3×7220112³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7220091 and 7220100.

It is not an unprimeable number, because it can be changed into a prime (7220111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16537 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (468720).

Almost surely, 2^7220112 is an apocalyptic number.

It is an amenable number.

7220112 is an abundant number, since it is smaller than the sum of its proper divisors (11528688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7220112 is a wasteful number, since it uses less digits than its factorization.

7220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 7220112 is about 2687.0266094700. The cubic root of 7220112 is about 193.2775053495.

Adding to 7220112 its reverse (2110227), we get a palindrome (9330339).

The spelling of 7220112 in words is "seven million, two hundred twenty thousand, one hundred twelve".