12221121020012 has 12 divisors (see below), whose sum is σ = 21387065006496. Its totient is φ = 6110531018160.

The previous prime is 12221121019997. The next prime is 12221121020179. The reversal of 12221121020012 is 21002012112221.

12221121020012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12221121020012³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6427103 + ... + 8108630.

It is an arithmetic number, because the mean of its divisors is an integer number (1782255417208).

Almost surely, 2^{12221121020012} is an apocalyptic number.

It is an amenable number.

12221121020012 is a deficient number, since it is larger than the sum of its proper divisors (9165943986484).

12221121020012 is a wasteful number, since it uses less digits than its factorization.

12221121020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14745928 (or 14745926 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221121020012 its reverse (21002012112221), we get a palindrome (33223133132233).

The spelling of 12221121020012 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty-one million, twenty thousand, twelve".