12012002120021 has 32 divisors (see below), whose sum is σ = 12385730165760. Its totient is φ = 11645721964800.

The previous prime is 12012002120011. The next prime is 12012002120033. The reversal of 12012002120021 is 12002120021021.

12012002120021 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 a de Polignac number, because none of the positive numbers 2^k-12012002120021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012002119978 and 12012002120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012002120011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2322952766 + ... + 2322957936.

It is an arithmetic number, because the mean of its divisors is an integer number (387054067680).

Almost surely, 2^{12012002120021} is an apocalyptic number.

It is an amenable number.

12012002120021 is a deficient number, since it is larger than the sum of its proper divisors (373728045739).

12012002120021 is a wasteful number, since it uses less digits than its factorization.

12012002120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7577.

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

Adding to 12012002120021 its reverse (12002120021021), we get a palindrome (24014122141042).

The spelling of 12012002120021 in words is "twelve trillion, twelve billion, two million, one hundred twenty thousand, twenty-one".