12517222 has 16 divisors (see below), whose sum is σ = 19245600. Its totient is φ = 6103552.

The previous prime is 12517217. The next prime is 12517231. The reversal of 12517222 is 22271521.

It is a junction number, because it is equal to n+sod(n) for n = 12517193 and 12517202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27654 + ... + 28102.

It is an arithmetic number, because the mean of its divisors is an integer number (1202850).

Almost surely, 2^12517222 is an apocalyptic number.

12517222 is a deficient number, since it is larger than the sum of its proper divisors (6728378).

12517222 is a wasteful number, since it uses less digits than its factorization.

12517222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its digits is 560, while the sum is 22.

The square root of 12517222 is about 3537.9686262035. The cubic root of 12517222 is about 232.1859760265.

Adding to 12517222 its reverse (22271521), we get a palindrome (34788743).

The spelling of 12517222 in words is "twelve million, five hundred seventeen thousand, two hundred twenty-two".