12123141312 has 56 divisors (see below), whose sum is σ = 32132473200. Its totient is φ = 4033908736.

The previous prime is 12123141301. The next prime is 12123141341. The reversal of 12123141312 is 21314132121.

It is a nude number because it is divisible by every one of its digits.

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, 53764 + ... + 164732.

Almost surely, 2^12123141312 is an apocalyptic number.

12123141312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12123141312 is an abundant number, since it is smaller than the sum of its proper divisors (20009331888).

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

12123141312 is a wasteful number, since it uses less digits than its factorization.

12123141312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111553 (or 111543 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 12123141312 its reverse (21314132121), we get a palindrome (33437273433).

The spelling of 12123141312 in words is "twelve billion, one hundred twenty-three million, one hundred forty-one thousand, three hundred twelve".