12111123132 has 96 divisors (see below), whose sum is σ = 31596633600. Its totient is φ = 4011762816.

The previous prime is 12111123131. The next prime is 12111123149. The reversal of 12111123132 is 23132111121.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111123131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21511483 + ... + 21512045.

It is an arithmetic number, because the mean of its divisors is an integer number (329131600).

Almost surely, 2^12111123132 is an apocalyptic number.

12111123132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111123132 is an abundant number, since it is smaller than the sum of its proper divisors (19485510468).

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

12111123132 is a wasteful number, since it uses less digits than its factorization.

12111123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1464 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12111123132 its reverse (23132111121), we get a palindrome (35243234253).

The spelling of 12111123132 in words is "twelve billion, one hundred eleven million, one hundred twenty-three thousand, one hundred thirty-two".