7212230 has 8 divisors (see below), whose sum is σ = 12982032. Its totient is φ = 2884888.

The previous prime is 7212211. The next prime is 7212239. The reversal of 7212230 is 322127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7212199 and 7212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7212239) 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 3 ways as a sum of consecutive naturals, for example, 360602 + ... + 360621.

It is an arithmetic number, because the mean of its divisors is an integer number (1622754).

Almost surely, 2^7212230 is an apocalyptic number.

7212230 is a deficient number, since it is larger than the sum of its proper divisors (5769802).

7212230 is a wasteful number, since it uses less digits than its factorization.

7212230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721230.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 7212230 is about 2685.5595320156. The cubic root of 7212230 is about 193.2071478080.

Adding to 7212230 its reverse (322127), we get a palindrome (7534357).

The spelling of 7212230 in words is "seven million, two hundred twelve thousand, two hundred thirty".