12101320551320 has 384 divisors, whose sum is σ = 37167426616320. Its totient is φ = 3424579430400.

The previous prime is 12101320551283. The next prime is 12101320551361. The reversal of 12101320551320 is 2315502310121.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 12101320551320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 148948229 + ... + 149029451.

It is an arithmetic number, because the mean of its divisors is an integer number (96790173480).

Almost surely, 2^{12101320551320} is an apocalyptic number.

12101320551320 is a gapful number since it is divisible by the number (10) 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 12101320551320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18583713308160).

12101320551320 is an abundant number, since it is smaller than the sum of its proper divisors (25066106065000).

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

12101320551320 is a wasteful number, since it uses less digits than its factorization.

12101320551320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81387 (or 81322 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 12101320551320 its reverse (2315502310121), we get a palindrome (14416822861441).

The spelling of 12101320551320 in words is "twelve trillion, one hundred one billion, three hundred twenty million, five hundred fifty-one thousand, three hundred twenty".