12120121202212 has 24 divisors (see below), whose sum is σ = 21664266914304. Its totient is φ = 5930363675712.

The previous prime is 12120121202197. The next prime is 12120121202227. The reversal of 12120121202212 is 21220212102121.

It is an interprime number because it is at equal distance from previous prime (12120121202197) and next prime (12120121202227).

It is a self number, because there is not a number n which added to its sum of digits gives 12120121202212.

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, 2654028 + ... + 5593219.

It is an arithmetic number, because the mean of its divisors is an integer number (902677788096).

Almost surely, 2^{12120121202212} is an apocalyptic number.

It is an amenable number.

12120121202212 is a deficient number, since it is larger than the sum of its proper divisors (9544145712092).

12120121202212 is a wasteful number, since it uses less digits than its factorization.

12120121202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8255115 (or 8255113 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12120121202212 its reverse (21220212102121), we get a palindrome (33340333304333).

The spelling of 12120121202212 in words is "twelve trillion, one hundred twenty billion, one hundred twenty-one million, two hundred two thousand, two hundred twelve".