12103021211212 has 12 divisors (see below), whose sum is σ = 21180372083640. Its totient is φ = 6051486330176.

The previous prime is 12103021211189. The next prime is 12103021211221. The reversal of 12103021211212 is 21211212030121.

It is a self number, because there is not a number n which added to its sum of digits gives 12103021211212.

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, 4923037 + ... + 6960052.

It is an arithmetic number, because the mean of its divisors is an integer number (1765031006970).

Almost surely, 2^{12103021211212} is an apocalyptic number.

It is an amenable number.

12103021211212 is a deficient number, since it is larger than the sum of its proper divisors (9077350872428).

12103021211212 is a wasteful number, since it uses less digits than its factorization.

12103021211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137720 (or 12137718 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12103021211212 its reverse (21211212030121), we get a palindrome (33314233241333).

The spelling of 12103021211212 in words is "twelve trillion, one hundred three billion, twenty-one million, two hundred eleven thousand, two hundred twelve".