12001010121121 has 16 divisors (see below), whose sum is σ = 13881024114048. Its totient is φ = 10162398153600.

The previous prime is 12001010121109. The next prime is 12001010121169. The reversal of 12001010121121 is 12112101010021.

It is a happy number.

It is not a de Polignac number, because 12001010121121 - 2⁷ = 12001010120993 is a prime.

It is a super-3 number, since 3×12001010121121³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12001010121721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26009851 + ... + 26467231.

It is an arithmetic number, because the mean of its divisors is an integer number (867564007128).

Almost surely, 2^{12001010121121} is an apocalyptic number.

It is an amenable number.

12001010121121 is a deficient number, since it is larger than the sum of its proper divisors (1880013992927).

12001010121121 is an equidigital number, since it uses as much as digits as its factorization.

12001010121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502632.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12001010121121 its reverse (12112101010021), we get a palindrome (24113111131142).

The spelling of 12001010121121 in words is "twelve trillion, one billion, ten million, one hundred twenty-one thousand, one hundred twenty-one".