12212112021212 has 6 divisors (see below), whose sum is σ = 21371196037128. Its totient is φ = 6106056010604.

The previous prime is 12212112021211. The next prime is 12212112021247. The reversal of 12212112021212 is 21212021121221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212112021211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526514002648 + ... + 1526514002655.

It is an arithmetic number, because the mean of its divisors is an integer number (3561866006188).

Almost surely, 2^{12212112021212} is an apocalyptic number.

It is an amenable number.

12212112021212 is a deficient number, since it is larger than the sum of its proper divisors (9159084015916).

12212112021212 is a wasteful number, since it uses less digits than its factorization.

12212112021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053028005307 (or 3053028005305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12212112021212 its reverse (21212021121221), we get a palindrome (33424133142433).

It can be divided in two parts, 1221211 and 2021212, that added together give a palindrome (3242423).

The spelling of 12212112021212 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, twenty-one thousand, two hundred twelve".