12002001001121 has 4 divisors (see below), whose sum is σ = 12002022961152. Its totient is φ = 12001979041092.

The previous prime is 12002001001103. The next prime is 12002001001139. The reversal of 12002001001121 is 12110010020021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12002001001103) and next prime (12002001001139).

It is a cyclic number.

It is not a de Polignac number, because 12002001001121 - 2³⁸ = 11727123094177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002001001141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10138721 + ... + 11260446.

It is an arithmetic number, because the mean of its divisors is an integer number (3000505740288).

Almost surely, 2^{12002001001121} is an apocalyptic number.

It is an amenable number.

12002001001121 is a deficient number, since it is larger than the sum of its proper divisors (21960031).

12002001001121 is an equidigital number, since it uses as much as digits as its factorization.

12002001001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21960030.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12002001001121 its reverse (12110010020021), we get a palindrome (24112011021142).

The spelling of 12002001001121 in words is "twelve trillion, two billion, one million, one thousand, one hundred twenty-one".