12000020121021 has 8 divisors (see below), whose sum is σ = 16340452930944. Its totient is φ = 7829800362560.

The previous prime is 12000020121013. The next prime is 12000020121031. The reversal of 12000020121021 is 12012102000021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12000020121021 - 2³ = 12000020121013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12000020120988 and 12000020121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000020121031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42553262700 + ... + 42553262981.

It is an arithmetic number, because the mean of its divisors is an integer number (2042556616368).

Almost surely, 2^{12000020121021} is an apocalyptic number.

It is an amenable number.

12000020121021 is a deficient number, since it is larger than the sum of its proper divisors (4340432809923).

12000020121021 is an equidigital number, since it uses as much as digits as its factorization.

12000020121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85106525731.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000020121021 its reverse (12012102000021), we get a palindrome (24012122121042).

The spelling of 12000020121021 in words is "twelve trillion, twenty million, one hundred twenty-one thousand, twenty-one".