12121012000100 has 36 divisors (see below), whose sum is σ = 27151066887168. Its totient is φ = 4692004644000.

The previous prime is 12121012000093. The next prime is 12121012000109. The reversal of 12121012000100 is 100021012121.

It is not an unprimeable number, because it can be changed into a prime (12121012000109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1954998836 + ... + 1955005035.

Almost surely, 2^{12121012000100} is an apocalyptic number.

12121012000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121012000100 is an abundant number, since it is smaller than the sum of its proper divisors (15030054887068).

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

12121012000100 is a wasteful number, since it uses less digits than its factorization.

12121012000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910003916 (or 3910003909 counting only the distinct ones).

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

Adding to 12121012000100 its reverse (100021012121), we get a palindrome (12221033012221).

The spelling of 12121012000100 in words is "twelve trillion, one hundred twenty-one billion, twelve million, one hundred", and thus it is an aban number.