12512216 has 32 divisors (see below), whose sum is σ = 24706080. Its totient is φ = 5932800.

The previous prime is 12512191. The next prime is 12512231. The reversal of 12512216 is 61221521.

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, 11621 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (772065).

Almost surely, 2^12512216 is an apocalyptic number.

It is an amenable number.

12512216 is a deficient number, since it is larger than the sum of its proper divisors (12193864).

12512216 is a wasteful number, since it uses less digits than its factorization.

12512216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115 (or 1111 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 12512216 is about 3537.2610873386. The cubic root of 12512216 is about 232.1550192648.

Adding to 12512216 its reverse (61221521), we get a palindrome (73733737).

The spelling of 12512216 in words is "twelve million, five hundred twelve thousand, two hundred sixteen".