12100000002100 has 18 divisors (see below), whose sum is σ = 26257000004774. Its totient is φ = 4840000000800.

The previous prime is 12100000002091. The next prime is 12100000002113. The reversal of 12100000002100 is 120000000121.

It can be written as a sum of positive squares in 3 ways, for example, as 2878003675024 + 9221996327076 = 1696468^2 + 3036774^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60499999911 + ... + 60500000110.

Almost surely, 2^{12100000002100} is an apocalyptic number.

12100000002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100000002100 is an abundant number, since it is smaller than the sum of its proper divisors (14157000002674).

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

12100000002100 is a wasteful number, since it uses less digits than its factorization.

12100000002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121000000035 (or 121000000028 counting only the distinct ones).

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

Adding to 12100000002100 its reverse (120000000121), we get a palindrome (12220000002221).

The spelling of 12100000002100 in words is "twelve trillion, one hundred billion, two thousand, one hundred".