12121021112012 has 24 divisors (see below), whose sum is σ = 21219298092720. Its totient is φ = 6058364866560.

The previous prime is 12121021112003. The next prime is 12121021112033. The reversal of 12121021112012 is 21021112012121.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 163299164 + ... + 163373372.

It is an arithmetic number, because the mean of its divisors is an integer number (884137420530).

Almost surely, 2^{12121021112012} is an apocalyptic number.

It is an amenable number.

12121021112012 is a deficient number, since it is larger than the sum of its proper divisors (9098276980708).

12121021112012 is a wasteful number, since it uses less digits than its factorization.

12121021112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88121 (or 88119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121021112012 its reverse (21021112012121), we get a palindrome (33142133124133).

It can be divided in two parts, 121 and 21021112012, that multiplied together give a palindrome (2543554553452).

The spelling of 12121021112012 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, twelve".