12512222 has 8 divisors (see below), whose sum is σ = 19756200. Its totient is φ = 5926824.

The previous prime is 12512191. The next prime is 12512231. The reversal of 12512222 is 22221521.

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 12512222.

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, 164597 + ... + 164672.

It is an arithmetic number, because the mean of its divisors is an integer number (2469525).

Almost surely, 2^12512222 is an apocalyptic number.

12512222 is a deficient number, since it is larger than the sum of its proper divisors (7243978).

12512222 is a wasteful number, since it uses less digits than its factorization.

12512222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329290.

The product of its digits is 160, while the sum is 17.

The square root of 12512222 is about 3537.2619354523. The cubic root of 12512222 is about 232.1550563733.

Adding to 12512222 its reverse (22221521), we get a palindrome (34733743).

The spelling of 12512222 in words is "twelve million, five hundred twelve thousand, two hundred twenty-two".