12012301121 has 4 divisors (see below), whose sum is σ = 12022422192. Its totient is φ = 12002180052.

The previous prime is 12012301061. The next prime is 12012301127. The reversal of 12012301121 is 12110321021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12110321021 = 87641 ⋅138181.

It is a cyclic number.

It is not a de Polignac number, because 12012301121 - 2³⁰ = 10938559297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012301096 and 12012301105.

It is not an unprimeable number, because it can be changed into a prime (12012301127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5058755 + ... + 5061128.

It is an arithmetic number, because the mean of its divisors is an integer number (3005605548).

Almost surely, 2^12012301121 is an apocalyptic number.

It is an amenable number.

12012301121 is a deficient number, since it is larger than the sum of its proper divisors (10121071).

12012301121 is a wasteful number, since it uses less digits than its factorization.

12012301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121070.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12012301121 its reverse (12110321021), we get a palindrome (24122622142).

The spelling of 12012301121 in words is "twelve billion, twelve million, three hundred one thousand, one hundred twenty-one".