12201121122212 has 12 divisors (see below), whose sum is σ = 23293049415216. Its totient is φ = 5545964146440.

The previous prime is 12201121122167. The next prime is 12201121122221. The reversal of 12201121122212 is 21222112110221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138649103618 + ... + 138649103705.

It is an arithmetic number, because the mean of its divisors is an integer number (1941087451268).

Almost surely, 2^{12201121122212} is an apocalyptic number.

It is an amenable number.

12201121122212 is a deficient number, since it is larger than the sum of its proper divisors (11091928293004).

12201121122212 is a wasteful number, since it uses less digits than its factorization.

12201121122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277298207338 (or 277298207336 counting only the distinct ones).

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

Adding to 12201121122212 its reverse (21222112110221), we get a palindrome (33423233232433).

The spelling of 12201121122212 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".