12135516 has 24 divisors (see below), whose sum is σ = 28851984. Its totient is φ = 3968640.

The previous prime is 12135499. The next prime is 12135521. The reversal of 12135516 is 61553121.

12135516 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 8905 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (1202166).

Almost surely, 2^12135516 is an apocalyptic number.

It is an amenable number.

12135516 is an abundant number, since it is smaller than the sum of its proper divisors (16716468).

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

12135516 is a wasteful number, since it uses less digits than its factorization.

12135516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19141 (or 19139 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 12135516 is about 3483.6067516297. The cubic root of 12135516 is about 229.8014417411.

Adding to 12135516 its reverse (61553121), we get a palindrome (73688637).

The spelling of 12135516 in words is "twelve million, one hundred thirty-five thousand, five hundred sixteen".