7812212 has 6 divisors (see below), whose sum is σ = 13671378. Its totient is φ = 3906104.

The previous prime is 7812191. The next prime is 7812221. The reversal of 7812212 is 2122187.

It can be written as a sum of positive squares in only one way, i.e., 7806436 + 5776 = 2794^2 + 76^2 .

It is a super-3 number, since 3×7812212³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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, 976523 + ... + 976530.

It is an arithmetic number, because the mean of its divisors is an integer number (2278563).

Almost surely, 2^7812212 is an apocalyptic number.

It is an amenable number.

7812212 is a deficient number, since it is larger than the sum of its proper divisors (5859166).

7812212 is a wasteful number, since it uses less digits than its factorization.

7812212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953057 (or 1953055 counting only the distinct ones).

The product of its digits is 448, while the sum is 23.

The square root of 7812212 is about 2795.0334523937. The cubic root of 7812212 is about 198.4226932180.

Adding to 7812212 its reverse (2122187), we get a palindrome (9934399).

The spelling of 7812212 in words is "seven million, eight hundred twelve thousand, two hundred twelve".