12121000012 has 12 divisors (see below), whose sum is σ = 23140091016. Its totient is φ = 5509545440.

The previous prime is 12121000009. The next prime is 12121000033. The reversal of 12121000012 is 21000012121.

12121000012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 137738593 + ... + 137738680.

It is an arithmetic number, because the mean of its divisors is an integer number (1928340918).

Almost surely, 2^12121000012 is an apocalyptic number.

It is an amenable number.

12121000012 is a deficient number, since it is larger than the sum of its proper divisors (11019091004).

12121000012 is a wasteful number, since it uses less digits than its factorization.

12121000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275477288 (or 275477286 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12121000012 its reverse (21000012121), we get a palindrome (33121012133).

It can be divided in two parts, 121 and 21000012, that multiplied together give a palindrome (2541001452).

The spelling of 12121000012 in words is "twelve billion, one hundred twenty-one million, twelve", and thus it is an aban number.