12002000020121 has 8 divisors (see below), whose sum is σ = 12039005182464. Its totient is φ = 11965011836800.

The previous prime is 12002000020117. The next prime is 12002000020189. The reversal of 12002000020121 is 12102000020021.

It is a happy number.

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 12002000020121 - 2² = 12002000020117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002000020321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2828105 + ... + 5657046.

It is an arithmetic number, because the mean of its divisors is an integer number (1504875647808).

Almost surely, 2^{12002000020121} is an apocalyptic number.

It is an amenable number.

12002000020121 is a deficient number, since it is larger than the sum of its proper divisors (37005162343).

12002000020121 is an equidigital number, since it uses as much as digits as its factorization.

12002000020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489511.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12002000020121 its reverse (12102000020021), we get a palindrome (24104000040142).

The spelling of 12002000020121 in words is "twelve trillion, two billion, twenty thousand, one hundred twenty-one".