12132111012 has 24 divisors (see below), whose sum is σ = 32352296256. Its totient is φ = 3466317408.

The previous prime is 12132111007. The next prime is 12132111023. The reversal of 12132111012 is 21011123121.

It is a junction number, because it is equal to n+sod(n) for n = 12132110982 and 12132111000.

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, 72214863 + ... + 72215030.

It is an arithmetic number, because the mean of its divisors is an integer number (1348012344).

Almost surely, 2^12132111012 is an apocalyptic number.

12132111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12132111012 is an abundant number, since it is smaller than the sum of its proper divisors (20220185244).

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

12132111012 is a wasteful number, since it uses less digits than its factorization.

12132111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144429907 (or 144429905 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12132111012 its reverse (21011123121), we get a palindrome (33143234133).

The spelling of 12132111012 in words is "twelve billion, one hundred thirty-two million, one hundred eleven thousand, twelve".