12012110200121 has 4 divisors (see below), whose sum is σ = 12055475219172. Its totient is φ = 11968745181072.

The previous prime is 12012110200117. The next prime is 12012110200127. The reversal of 12012110200121 is 12100201121021.

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 670949383225 + 11341160816896 = 819115^2 + 3367664^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012110200121 - 2² = 12012110200117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012110200096 and 12012110200105.

It is not an unprimeable number, because it can be changed into a prime (12012110200127) 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, 21682509110 + ... + 21682509663.

It is an arithmetic number, because the mean of its divisors is an integer number (3013868804793).

Almost surely, 2^{12012110200121} is an apocalyptic number.

It is an amenable number.

12012110200121 is a deficient number, since it is larger than the sum of its proper divisors (43365019051).

12012110200121 is an equidigital number, since it uses as much as digits as its factorization.

12012110200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43365019050.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12012110200121 its reverse (12100201121021), we get a palindrome (24112311321142).

The spelling of 12012110200121 in words is "twelve trillion, twelve billion, one hundred ten million, two hundred thousand, one hundred twenty-one".