12100120000 has 140 divisors (see below), whose sum is σ = 30121901656. Its totient is φ = 4821120000.

The previous prime is 12100119989. The next prime is 12100120001. The reversal of 12100120000 is 2100121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100120001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14919595 + ... + 14920405.

Almost surely, 2^12100120000 is an apocalyptic number.

12100120000 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 12100120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15060950828).

12100120000 is an abundant number, since it is smaller than the sum of its proper divisors (18021781656).

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

12100120000 is an frugal number, since it uses more digits than its factorization.

12100120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12100120000 its reverse (2100121), we get a palindrome (12102220121).

The spelling of 12100120000 in words is "twelve billion, one hundred million, one hundred twenty thousand".