12021120122121 has 12 divisors (see below), whose sum is σ = 18942371101680. Its totient is φ = 7285527346680.

The previous prime is 12021120122111. The next prime is 12021120122129. The reversal of 12021120122121 is 12122102112021.

12021120122121 is a `hidden beast` number, since 12 + 0 + 211 + 201 + 221 + 21 = 666.

12021120122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12021120122121 - 2¹⁸ = 12021119859977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021120122094 and 12021120122103.

It is not an unprimeable number, because it can be changed into a prime (12021120122129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60712727791 + ... + 60712727988.

It is an arithmetic number, because the mean of its divisors is an integer number (1578530925140).

Almost surely, 2^{12021120122121} is an apocalyptic number.

12021120122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021120122121 is a deficient number, since it is larger than the sum of its proper divisors (6921250979559).

12021120122121 is a wasteful number, since it uses less digits than its factorization.

12021120122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121425455796 (or 121425455793 counting only the distinct ones).

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

Adding to 12021120122121 its reverse (12122102112021), we get a palindrome (24143222234142).

The spelling of 12021120122121 in words is "twelve trillion, twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".