212212011121212 has 12 divisors (see below), whose sum is σ = 495161359282856. Its totient is φ = 70737337040400.

The previous prime is 212212011121199. The next prime is 212212011121217. The reversal of 212212011121212 is 212121110212212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212011121217) 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, 8842167130039 + ... + 8842167130062.

Almost surely, 2^{212212011121212} is an apocalyptic number.

It is an amenable number.

212212011121212 is an abundant number, since it is smaller than the sum of its proper divisors (282949348161644).

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

212212011121212 is a wasteful number, since it uses less digits than its factorization.

212212011121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17684334260108 (or 17684334260106 counting only the distinct ones).

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

Adding to 212212011121212 its reverse (212121110212212), we get a palindrome (424333121333424).

The spelling of 212212011121212 in words is "two hundred twelve trillion, two hundred twelve billion, eleven million, one hundred twenty-one thousand, two hundred twelve".