7321122 has 12 divisors (see below), whose sum is σ = 15862470. Its totient is φ = 2440368.

The previous prime is 7321121. The next prime is 7321123. The reversal of 7321122 is 2211237.

It is an interprime number because it is at equal distance from previous prime (7321121) and next prime (7321123).

It can be written as a sum of positive squares in only one way, i.e., 6548481 + 772641 = 2559^2 + 879^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 406729 = 7321122 / (7 + 3 + 2 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 7321095 and 7321104.

It is not an unprimeable number, because it can be changed into a prime (7321121) 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 5 ways as a sum of consecutive naturals, for example, 203347 + ... + 203382.

Almost surely, 2^7321122 is an apocalyptic number.

7321122 is an abundant number, since it is smaller than the sum of its proper divisors (8541348).

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

7321122 is a wasteful number, since it uses less digits than its factorization.

7321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406737 (or 406734 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 7321122 is about 2705.7571953152. The cubic root of 7321122 is about 194.1746576027.

Adding to 7321122 its reverse (2211237), we get a palindrome (9532359).

The spelling of 7321122 in words is "seven million, three hundred twenty-one thousand, one hundred twenty-two".