12021020002121 has 16 divisors (see below), whose sum is σ = 13088696712000. Its totient is φ = 10974018283200.

The previous prime is 12021020002099. The next prime is 12021020002139. The reversal of 12021020002121 is 12120002012021.

12021020002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12021020002121 - 2²² = 12021015807817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021020002096 and 12021020002105.

It is not an unprimeable number, because it can be changed into a prime (12021020002151) 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, 4024871 + ... + 6343628.

It is an arithmetic number, because the mean of its divisors is an integer number (818043544500).

Almost surely, 2^{12021020002121} is an apocalyptic number.

It is an amenable number.

12021020002121 is a deficient number, since it is larger than the sum of its proper divisors (1067676709879).

12021020002121 is a wasteful number, since it uses less digits than its factorization.

12021020002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369496.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12021020002121 its reverse (12120002012021), we get a palindrome (24141022014142).

The spelling of 12021020002121 in words is "twelve trillion, twenty-one billion, twenty million, two thousand, one hundred twenty-one".