7722212 has 6 divisors (see below), whose sum is σ = 13513878. Its totient is φ = 3861104.

The previous prime is 7722191. The next prime is 7722217. The reversal of 7722212 is 2122277.

It can be written as a sum of positive squares in only one way, i.e., 7107556 + 614656 = 2666^2 + 784^2 .

It is not an unprimeable number, because it can be changed into a prime (7722217) 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, 965273 + ... + 965280.

It is an arithmetic number, because the mean of its divisors is an integer number (2252313).

Almost surely, 2^7722212 is an apocalyptic number.

It is an amenable number.

7722212 is a deficient number, since it is larger than the sum of its proper divisors (5791666).

7722212 is a wasteful number, since it uses less digits than its factorization.

7722212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930557 (or 1930555 counting only the distinct ones).

The product of its digits is 784, while the sum is 23.

The square root of 7722212 is about 2778.8868274905. The cubic root of 7722212 is about 197.6577770367.

Adding to 7722212 its reverse (2122277), we get a palindrome (9844489).

The spelling of 7722212 in words is "seven million, seven hundred twenty-two thousand, two hundred twelve".