12121020100112 has 40 divisors (see below), whose sum is σ = 29279347257792. Its totient is φ = 4722475363200.

The previous prime is 12121020100093. The next prime is 12121020100169. The reversal of 12121020100112 is 21100102012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4919243939 + ... + 4919246402.

Almost surely, 2^{12121020100112} is an apocalyptic number.

It is an amenable number.

12121020100112 is an abundant number, since it is smaller than the sum of its proper divisors (17158327157680).

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

12121020100112 is a wasteful number, since it uses less digits than its factorization.

12121020100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9838490367 (or 9838490361 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121020100112 its reverse (21100102012121), we get a palindrome (33221122112233).

The spelling of 12121020100112 in words is "twelve trillion, one hundred twenty-one billion, twenty million, one hundred thousand, one hundred twelve".