212212210221212 has 12 divisors (see below), whose sum is σ = 371405586277656. Its totient is φ = 106096328427600.

The previous prime is 212212210221029. The next prime is 212212210221259. The reversal of 212212210221212 is 212122012212212.

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, 2444121914 + ... + 2444208737.

It is an arithmetic number, because the mean of its divisors is an integer number (30950465523138).

Almost surely, 2^{212212210221212} is an apocalyptic number.

It is an amenable number.

212212210221212 is a deficient number, since it is larger than the sum of its proper divisors (159193376056444).

212212210221212 is a wasteful number, since it uses less digits than its factorization.

212212210221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888341508 (or 4888341506 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212212210221212 its reverse (212122012212212), we get a palindrome (424334222433424).

The spelling of 212212210221212 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred ten million, two hundred twenty-one thousand, two hundred twelve".