722215222 has 8 divisors (see below), whose sum is σ = 1083468672. Its totient is φ = 361059000.

The previous prime is 722215211. The next prime is 722215223. The reversal of 722215222 is 222512227.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722215223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429 + ... + 38032.

It is an arithmetic number, because the mean of its divisors is an integer number (135433584).

Almost surely, 2^722215222 is an apocalyptic number.

722215222 is a deficient number, since it is larger than the sum of its proper divisors (361253450).

722215222 is a wasteful number, since it uses less digits than its factorization.

722215222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48614.

The product of its digits is 2240, while the sum is 25.

The square root of 722215222 is about 26874.0622534071. The cubic root of 722215222 is about 897.1992032602.

Adding to 722215222 its reverse (222512227), we get a palindrome (944727449).

The spelling of 722215222 in words is "seven hundred twenty-two million, two hundred fifteen thousand, two hundred twenty-two".