12712216 has 32 divisors (see below), whose sum is σ = 27374400. Its totient is φ = 5473440.

The previous prime is 12712187. The next prime is 12712223. The reversal of 12712216 is 61221721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 2130 + ... + 5473.

It is an arithmetic number, because the mean of its divisors is an integer number (855450).

Almost surely, 2^12712216 is an apocalyptic number.

It is an amenable number.

12712216 is an abundant number, since it is smaller than the sum of its proper divisors (14662184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12712216 is a wasteful number, since it uses less digits than its factorization.

12712216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7639 (or 7635 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 12712216 is about 3565.4194704130. The cubic root of 12712216 is about 233.3854377971.

Adding to 12712216 its reverse (61221721), we get a palindrome (73933937).

The spelling of 12712216 in words is "twelve million, seven hundred twelve thousand, two hundred sixteen".