12132155412 has 72 divisors (see below), whose sum is σ = 34091832320. Its totient is φ = 3612548160.

The previous prime is 12132155411. The next prime is 12132155447. The reversal of 12132155412 is 21455123121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132155411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403612 + ... + 432627.

Almost surely, 2^12132155412 is an apocalyptic number.

12132155412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12132155412 is an abundant number, since it is smaller than the sum of its proper divisors (21959676908).

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

12132155412 is a wasteful number, since it uses less digits than its factorization.

12132155412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836293 (or 836288 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

Adding to 12132155412 its reverse (21455123121), we get a palindrome (33587278533).

The spelling of 12132155412 in words is "twelve billion, one hundred thirty-two million, one hundred fifty-five thousand, four hundred twelve".