12021021012121 has 16 divisors (see below), whose sum is σ = 13244571072000. Its totient is φ = 10819273824000.

The previous prime is 12021021012089. The next prime is 12021021012157. The reversal of 12021021012121 is 12121012012021.

It is a cyclic number.

It is not a de Polignac number, because 12021021012121 - 2⁵ = 12021021012089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021021012095 and 12021021012104.

It is not an unprimeable number, because it can be changed into a prime (12021021012821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16530145 + ... + 17242033.

It is an arithmetic number, because the mean of its divisors is an integer number (827785692000).

Almost surely, 2^{12021021012121} is an apocalyptic number.

12021021012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021021012121 is a deficient number, since it is larger than the sum of its proper divisors (1223550059879).

12021021012121 is a wasteful number, since it uses less digits than its factorization.

12021021012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727200.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12021021012121 its reverse (12121012012021), we get a palindrome (24142033024142).

The spelling of 12021021012121 in words is "twelve trillion, twenty-one billion, twenty-one million, twelve thousand, one hundred twenty-one".