12111210021212 has 12 divisors (see below), whose sum is σ = 21194696017656. Its totient is φ = 6055582587600.

The previous prime is 12111210021203. The next prime is 12111210021259. The reversal of 12111210021212 is 21212001211121.

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, 4359698 + ... + 6574905.

It is an arithmetic number, because the mean of its divisors is an integer number (1766224668138).

Almost surely, 2^{12111210021212} is an apocalyptic number.

It is an amenable number.

12111210021212 is a deficient number, since it is larger than the sum of its proper divisors (9083485996444).

12111210021212 is a wasteful number, since it uses less digits than its factorization.

12111210021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11211508 (or 11211506 counting only the distinct ones).

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

Adding to 12111210021212 its reverse (21212001211121), we get a palindrome (33323211232333).

The spelling of 12111210021212 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, twenty-one thousand, two hundred twelve".