12021222110121 has 192 divisors, whose sum is σ = 21790142300160. Its totient is φ = 6409391950080.

The previous prime is 12021222110047. The next prime is 12021222110173. The reversal of 12021222110121 is 12101122212021.

12021222110121 is a `hidden beast` number, since 120 + 212 + 2 + 211 + 0 + 121 = 666.

It is not a de Polignac number, because 12021222110121 - 2⁹ = 12021222109609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021222110094 and 12021222110103.

It is not an unprimeable number, because it can be changed into a prime (12021222111121) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 4912635520 + ... + 4912637966.

It is an arithmetic number, because the mean of its divisors is an integer number (113490324480).

Almost surely, 2^{12021222110121} is an apocalyptic number.

It is an amenable number.

12021222110121 is a deficient number, since it is larger than the sum of its proper divisors (9768920190039).

12021222110121 is a wasteful number, since it uses less digits than its factorization.

12021222110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12021222110121 its reverse (12101122212021), we get a palindrome (24122344322142).

The spelling of 12021222110121 in words is "twelve trillion, twenty-one billion, two hundred twenty-two million, one hundred ten thousand, one hundred twenty-one".