12712222 has 8 divisors (see below), whose sum is σ = 19175400. Its totient is φ = 6320424.

The previous prime is 12712187. The next prime is 12712223. The reversal of 12712222 is 22221721.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12712222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12712223) 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 in 3 ways as a sum of consecutive naturals, for example, 17397 + ... + 18112.

It is an arithmetic number, because the mean of its divisors is an integer number (2396925).

Almost surely, 2^12712222 is an apocalyptic number.

12712222 is a deficient number, since it is larger than the sum of its proper divisors (6463178).

12712222 is a wasteful number, since it uses less digits than its factorization.

12712222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35690.

The product of its digits is 224, while the sum is 19.

The square root of 12712222 is about 3565.4203118286. The cubic root of 12712222 is about 233.3854745153.

Adding to 12712222 its reverse (22221721), we get a palindrome (34933943).

The spelling of 12712222 in words is "twelve million, seven hundred twelve thousand, two hundred twenty-two".