12122112021212 has 24 divisors (see below), whose sum is σ = 21899861114880. Its totient is φ = 5865041922480.

The previous prime is 12122112021193. The next prime is 12122112021223. The reversal of 12122112021212 is 21212021122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660648 + ... + 5596719.

It is an arithmetic number, because the mean of its divisors is an integer number (912494213120).

Almost surely, 2^{12122112021212} is an apocalyptic number.

It is an amenable number.

12122112021212 is a deficient number, since it is larger than the sum of its proper divisors (9777749093668).

12122112021212 is a wasteful number, since it uses less digits than its factorization.

12122112021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8269241 (or 8269239 counting only the distinct ones).

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

Adding to 12122112021212 its reverse (21212021122121), we get a palindrome (33334133143333).

The spelling of 12122112021212 in words is "twelve trillion, one hundred twenty-two billion, one hundred twelve million, twenty-one thousand, two hundred twelve".