12002120121021 has 8 divisors (see below), whose sum is σ = 16002895696704. Its totient is φ = 8001378979680.

The previous prime is 12002120120999. The next prime is 12002120121083. The reversal of 12002120121021 is 12012102120021.

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

It is not a de Polignac number, because 12002120121021 - 2⁵ = 12002120120989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002120121821) 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, 7784016 + ... + 9197561.

It is an arithmetic number, because the mean of its divisors is an integer number (2000361962088).

Almost surely, 2^{12002120121021} is an apocalyptic number.

It is an amenable number.

12002120121021 is a deficient number, since it is larger than the sum of its proper divisors (4000775575683).

12002120121021 is a wasteful number, since it uses less digits than its factorization.

12002120121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17217171.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12002120121021 its reverse (12012102120021), we get a palindrome (24014222241042).

The spelling of 12002120121021 in words is "twelve trillion, two billion, one hundred twenty million, one hundred twenty-one thousand, twenty-one".