12111211210212 has 120 divisors (see below), whose sum is σ = 34981060536576. Its totient is φ = 3634395823872.

The previous prime is 12111211210199. The next prime is 12111211210261. The reversal of 12111211210212 is 21201211211121.

It is a happy number.

12111211210212 is a `hidden beast` number, since 1 + 21 + 11 + 211 + 210 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47674188 + ... + 47927555.

Almost surely, 2^{12111211210212} is an apocalyptic number.

12111211210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111211210212 is an abundant number, since it is smaller than the sum of its proper divisors (22869849326364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111211210212 is a wasteful number, since it uses less digits than its factorization.

12111211210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95601799 (or 95601788 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12111211210212 its reverse (21201211211121), we get a palindrome (33312422421333).

Subtracting 12111211210212 from its reverse (21201211211121), we obtain a palindrome (9090000000909).

The spelling of 12111211210212 in words is "twelve trillion, one hundred eleven billion, two hundred eleven million, two hundred ten thousand, two hundred twelve".