12100120021100 has 72 divisors (see below), whose sum is σ = 26323128128640. Its totient is φ = 4827915025920.

The previous prime is 12100120021091. The next prime is 12100120021103. The reversal of 12100120021100 is 112002100121.

It is not an unprimeable number, because it can be changed into a prime (12100120021103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116680472 + ... + 116784128.

Almost surely, 2^{12100120021100} is an apocalyptic number.

12100120021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100120021100 is an abundant number, since it is smaller than the sum of its proper divisors (14223008107540).

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

12100120021100 is a wasteful number, since it uses less digits than its factorization.

12100120021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106587 (or 106580 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12100120021100 its reverse (112002100121), we get a palindrome (12212122121221).

The spelling of 12100120021100 in words is "twelve trillion, one hundred billion, one hundred twenty million, twenty-one thousand, one hundred".