12135616 has 14 divisors (see below), whose sum is σ = 24081740. Its totient is φ = 6067776.

The previous prime is 12135611. The next prime is 12135677. The reversal of 12135616 is 61653121.

It is not an unprimeable number, because it can be changed into a prime (12135611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94746 + ... + 94873.

Almost surely, 2^12135616 is an apocalyptic number.

12135616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12135616 is a deficient number, since it is larger than the sum of its proper divisors (11946124).

12135616 is an equidigital number, since it uses as much as digits as its factorization.

12135616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189631 (or 189621 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 12135616 is about 3483.6211045405. The cubic root of 12135616 is about 229.8020729485.

Adding to 12135616 its reverse (61653121), we get a palindrome (73788737).

The spelling of 12135616 in words is "twelve million, one hundred thirty-five thousand, six hundred sixteen".