12271516 has 6 divisors (see below), whose sum is σ = 21475160. Its totient is φ = 6135756.

The previous prime is 12271507. The next prime is 12271517. The reversal of 12271516 is 61517221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1533936 + ... + 1533943.

Almost surely, 2^12271516 is an apocalyptic number.

It is an amenable number.

12271516 is a deficient number, since it is larger than the sum of its proper divisors (9203644).

12271516 is a wasteful number, since it uses less digits than its factorization.

12271516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067883 (or 3067881 counting only the distinct ones).

The product of its digits is 840, while the sum is 25.

The square root of 12271516 is about 3503.0723657955. The cubic root of 12271516 is about 230.6566991286.

Adding to 12271516 its reverse (61517221), we get a palindrome (73788737).

The spelling of 12271516 in words is "twelve million, two hundred seventy-one thousand, five hundred sixteen".