12121002012112 has 80 divisors (see below), whose sum is σ = 27837669025152. Its totient is φ = 5004274521600.

The previous prime is 12121002012107. The next prime is 12121002012121. The reversal of 12121002012112 is 21121020012121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 14061418 + ... + 14898505.

Almost surely, 2^{12121002012112} is an apocalyptic number.

It is an amenable number.

12121002012112 is an abundant number, since it is smaller than the sum of its proper divisors (15716667013040).

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

12121002012112 is a wasteful number, since it uses less digits than its factorization.

12121002012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28960076 (or 28960070 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121002012112 its reverse (21121020012121), we get a palindrome (33242022024233).

Subtracting 12121002012112 from its reverse (21121020012121), we obtain a square (9000018000009 = 3000003²).

The spelling of 12121002012112 in words is "twelve trillion, one hundred twenty-one billion, two million, twelve thousand, one hundred twelve".