7217222 has 8 divisors (see below), whose sum is σ = 11030256. Its totient is φ = 3540472.

The previous prime is 7217219. The next prime is 7217237. The reversal of 7217222 is 2227127.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33938 + ... + 34149.

It is an arithmetic number, because the mean of its divisors is an integer number (1378782).

Almost surely, 2^7217222 is an apocalyptic number.

7217222 is a deficient number, since it is larger than the sum of its proper divisors (3813034).

7217222 is a wasteful number, since it uses less digits than its factorization.

7217222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68142.

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

The square root of 7217222 is about 2686.4887865018. The cubic root of 7217222 is about 193.2517141275.

The spelling of 7217222 in words is "seven million, two hundred seventeen thousand, two hundred twenty-two".