12103654212 has 72 divisors (see below), whose sum is σ = 33005156184. Its totient is φ = 3717835776.

The previous prime is 12103654183. The next prime is 12103654219. The reversal of 12103654212 is 21245630121.

12103654212 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 3 + 654 + 2 + 1 + 2 = 666.

12103654212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1761984576 + 10341669636 = 41976^2 + 101694^2 .

It is not an unprimeable number, because it can be changed into a prime (12103654219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255718 + ... + 299330.

It is an arithmetic number, because the mean of its divisors is an integer number (458404947).

Almost surely, 2^12103654212 is an apocalyptic number.

12103654212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103654212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16502578092).

12103654212 is an abundant number, since it is smaller than the sum of its proper divisors (20901501972).

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

12103654212 is a wasteful number, since it uses less digits than its factorization.

12103654212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44229 (or 44224 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 12103654212 in words is "twelve billion, one hundred three million, six hundred fifty-four thousand, two hundred twelve".