12100120011100 has 72 divisors (see below), whose sum is σ = 28648995003216. Its totient is φ = 4399320000000.

The previous prime is 12100120011061. The next prime is 12100120011151. The reversal of 12100120011100 is 111002100121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5809600 + ... + 7612600.

It is an arithmetic number, because the mean of its divisors is an integer number (397902708378).

Almost surely, 2^{12100120011100} is an apocalyptic number.

12100120011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100120011100 is an abundant number, since it is smaller than the sum of its proper divisors (16548874992116).

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

12100120011100 is a wasteful number, since it uses less digits than its factorization.

12100120011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809127 (or 1809120 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12100120011100 its reverse (111002100121), we get a palindrome (12211122111221).

The spelling of 12100120011100 in words is "twelve trillion, one hundred billion, one hundred twenty million, eleven thousand, one hundred".