12887222 has 16 divisors (see below), whose sum is σ = 20263392. Its totient is φ = 6135360.

The previous prime is 12887219. The next prime is 12887239. The reversal of 12887222 is 22278821.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12428 + ... + 13424.

It is an arithmetic number, because the mean of its divisors is an integer number (1266462).

Almost surely, 2^12887222 is an apocalyptic number.

12887222 is a deficient number, since it is larger than the sum of its proper divisors (7376170).

12887222 is a wasteful number, since it uses less digits than its factorization.

12887222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303.

The product of its digits is 7168, while the sum is 32.

The square root of 12887222 is about 3589.8777137947. The cubic root of 12887222 is about 234.4515473109.

The spelling of 12887222 in words is "twelve million, eight hundred eighty-seven thousand, two hundred twenty-two".