12212211211212 has 12 divisors (see below), whose sum is σ = 28495159492856. Its totient is φ = 4070737070400.

The previous prime is 12212211211133. The next prime is 12212211211217. The reversal of 12212211211212 is 21211211221221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12212211211217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508842133789 + ... + 508842133812.

Almost surely, 2^{12212211211212} is an apocalyptic number.

12212211211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212211211212 is an abundant number, since it is smaller than the sum of its proper divisors (16282948281644).

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

12212211211212 is a wasteful number, since it uses less digits than its factorization.

12212211211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017684267608 (or 1017684267606 counting only the distinct ones).

The product of its digits is 128, while the sum is 21.

Adding to 12212211211212 its reverse (21211211221221), we get a palindrome (33423422432433).

The spelling of 12212211211212 in words is "twelve trillion, two hundred twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred twelve".