12012120202121 has 4 divisors (see below), whose sum is σ = 12936129448452. Its totient is φ = 11088110955792.

The previous prime is 12012120202097. The next prime is 12012120202127. The reversal of 12012120202121 is 12120202121021.

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 1504635876496 + 10507484325625 = 1226636^2 + 3241525^2 .

It is not a de Polignac number, because 12012120202121 - 2¹⁰ = 12012120201097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012120202121.

It is not an unprimeable number, because it can be changed into a prime (12012120202127) 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, 462004623146 + ... + 462004623171.

It is an arithmetic number, because the mean of its divisors is an integer number (3234032362113).

Almost surely, 2^{12012120202121} is an apocalyptic number.

It is an amenable number.

12012120202121 is a deficient number, since it is larger than the sum of its proper divisors (924009246331).

12012120202121 is an equidigital number, since it uses as much as digits as its factorization.

12012120202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924009246330.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12012120202121 its reverse (12120202121021), we get a palindrome (24132322323142).

The spelling of 12012120202121 in words is "twelve trillion, twelve billion, one hundred twenty million, two hundred two thousand, one hundred twenty-one".