12012120002100 has 36 divisors (see below), whose sum is σ = 34755067206944. Its totient is φ = 3203232000480.

The previous prime is 12012120002059. The next prime is 12012120002101. The reversal of 12012120002100 is 120002121021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012120002101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20020199704 + ... + 20020200303.

Almost surely, 2^{12012120002100} is an apocalyptic number.

12012120002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012120002100 is an abundant number, since it is smaller than the sum of its proper divisors (22742947204844).

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

12012120002100 is a wasteful number, since it uses less digits than its factorization.

12012120002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40040400024 (or 40040400017 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12012120002100 its reverse (120002121021), we get a palindrome (12132122123121).

The spelling of 12012120002100 in words is "twelve trillion, twelve billion, one hundred twenty million, two thousand, one hundred".