12271016 has 8 divisors (see below), whose sum is σ = 23008170. Its totient is φ = 6135504.

The previous prime is 12271003. The next prime is 12271019. The reversal of 12271016 is 61017221.

It can be written as a sum of positive squares in only one way, i.e., 9278116 + 2992900 = 3046^2 + 1730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12271019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766931 + ... + 766946.

Almost surely, 2^12271016 is an apocalyptic number.

It is an amenable number.

12271016 is a deficient number, since it is larger than the sum of its proper divisors (10737154).

12271016 is a wasteful number, since it uses less digits than its factorization.

12271016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533883 (or 1533879 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 12271016 is about 3503.0009991434. Note that the first 3 decimals coincide. The cubic root of 12271016 is about 230.6535664020.

Adding to 12271016 its reverse (61017221), we get a palindrome (73288237).

The spelling of 12271016 in words is "twelve million, two hundred seventy-one thousand, sixteen".