12101121212212 has 12 divisors (see below), whose sum is σ = 21493036183360. Its totient is φ = 5960253731256.

The previous prime is 12101121212179. The next prime is 12101121212221. The reversal of 12101121212212 is 21221212110121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12101121212212.

It is a congruent number.

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, 22576718412 + ... + 22576718947.

Almost surely, 2^{12101121212212} is an apocalyptic number.

It is an amenable number.

12101121212212 is a deficient number, since it is larger than the sum of its proper divisors (9391914971148).

12101121212212 is a wasteful number, since it uses less digits than its factorization.

12101121212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45153437430 (or 45153437428 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12101121212212 its reverse (21221212110121), we get a palindrome (33322333322333).

The spelling of 12101121212212 in words is "twelve trillion, one hundred one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".