12121110132 has 12 divisors (see below), whose sum is σ = 28282590336. Its totient is φ = 4040370040.

The previous prime is 12121110061. The next prime is 12121110137. The reversal of 12121110132 is 23101112121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121110137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505046244 + ... + 505046267.

It is an arithmetic number, because the mean of its divisors is an integer number (2356882528).

Almost surely, 2^12121110132 is an apocalyptic number.

12121110132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12121110132 is an abundant number, since it is smaller than the sum of its proper divisors (16161480204).

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

12121110132 is a wasteful number, since it uses less digits than its factorization.

12121110132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010092518 (or 1010092516 counting only the distinct ones).

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

Adding to 12121110132 its reverse (23101112121), we get a palindrome (35222222253).

The spelling of 12121110132 in words is "twelve billion, one hundred twenty-one million, one hundred ten thousand, one hundred thirty-two".