12135232112 has 10 divisors (see below), whose sum is σ = 23512012248. Its totient is φ = 6067616048.

The previous prime is 12135232099. The next prime is 12135232117. The reversal of 12135232112 is 21123253121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135232117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379225988 + ... + 379226019.

Almost surely, 2^12135232112 is an apocalyptic number.

It is an amenable number.

12135232112 is a deficient number, since it is larger than the sum of its proper divisors (11376780136).

12135232112 is an equidigital number, since it uses as much as digits as its factorization.

12135232112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758452015 (or 758452009 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

Adding to 12135232112 its reverse (21123253121), we get a palindrome (33258485233).

It can be divided in two parts, 1213 and 5232112, that added together give a palindrome (5233325).

The spelling of 12135232112 in words is "twelve billion, one hundred thirty-five million, two hundred thirty-two thousand, one hundred twelve".