12101232312012 has 96 divisors (see below), whose sum is σ = 29634136519680. Its totient is φ = 3838167728640.

The previous prime is 12101232312011. The next prime is 12101232312019. The reversal of 12101232312012 is 21021323210121.

It is a self number, because there is not a number n which added to its sum of digits gives 12101232312012.

It is not an unprimeable number, because it can be changed into a prime (12101232312011) 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, 31078843 + ... + 31465805.

It is an arithmetic number, because the mean of its divisors is an integer number (308688922080).

Almost surely, 2^{12101232312012} is an apocalyptic number.

12101232312012 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 12101232312012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14817068259840).

12101232312012 is an abundant number, since it is smaller than the sum of its proper divisors (17532904207668).

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

12101232312012 is a wasteful number, since it uses less digits than its factorization.

12101232312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388303 (or 388301 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12101232312012 its reverse (21021323210121), we get a palindrome (33122555522133).

The spelling of 12101232312012 in words is "twelve trillion, one hundred one billion, two hundred thirty-two million, three hundred twelve thousand, twelve".