12135650 has 12 divisors (see below), whose sum is σ = 22572402. Its totient is φ = 4854240.

The previous prime is 12135611. The next prime is 12135677. The reversal of 12135650 is 5653121.

12135650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5202961 + 6932689 = 2281^2 + 2633^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121307 + ... + 121406.

Almost surely, 2^12135650 is an apocalyptic number.

12135650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12135650 is a deficient number, since it is larger than the sum of its proper divisors (10436752).

12135650 is a wasteful number, since it uses less digits than its factorization.

12135650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242725 (or 242720 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 12135650 is about 3483.6259845167. The cubic root of 12135650 is about 229.8022875582.

Adding to 12135650 its reverse (5653121), we get a palindrome (17788771).

The spelling of 12135650 in words is "twelve million, one hundred thirty-five thousand, six hundred fifty".