12002120112121 has 4 divisors (see below), whose sum is σ = 12294854749044. Its totient is φ = 11709385475200.

The previous prime is 12002120112091. The next prime is 12002120112149. The reversal of 12002120112121 is 12121102120021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1331575215721 + 10670544896400 = 1153939^2 + 3266580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002120112121 - 2³¹ = 11999972628473 is a prime.

It is a super-2 number, since 2×12002120112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002120112095 and 12002120112104.

It is not an unprimeable number, because it can be changed into a prime (12002120113121) 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, 146367318400 + ... + 146367318481.

It is an arithmetic number, because the mean of its divisors is an integer number (3073713687261).

Almost surely, 2^{12002120112121} is an apocalyptic number.

It is an amenable number.

12002120112121 is a deficient number, since it is larger than the sum of its proper divisors (292734636923).

12002120112121 is an equidigital number, since it uses as much as digits as its factorization.

12002120112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292734636922.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12002120112121 its reverse (12121102120021), we get a palindrome (24123222232142).

The spelling of 12002120112121 in words is "twelve trillion, two billion, one hundred twenty million, one hundred twelve thousand, one hundred twenty-one".