12117403700 has 72 divisors (see below), whose sum is σ = 27020687232. Its totient is φ = 4714433280.

The previous prime is 12117403681. The next prime is 12117403717. The reversal of 12117403700 is 730471121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12117403700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 758192 + ... + 774008.

Almost surely, 2^12117403700 is an apocalyptic number.

12117403700 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 12117403700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13510343616).

12117403700 is an abundant number, since it is smaller than the sum of its proper divisors (14903283532).

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

12117403700 is a wasteful number, since it uses less digits than its factorization.

12117403700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16041 (or 16034 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 12117403700 its reverse (730471121), we get a palindrome (12847874821).

The spelling of 12117403700 in words is "twelve billion, one hundred seventeen million, four hundred three thousand, seven hundred".