12012002302121 has 16 divisors (see below), whose sum is σ = 13081803983424. Its totient is φ = 10985282187264.

The previous prime is 12012002302067. The next prime is 12012002302133. The reversal of 12012002302121 is 12120320021021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012002302121 is a prime.

It is a super-2 number, since 2×12012002302121² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 12012002302121.

It is not an unprimeable number, because it can be changed into a prime (12012002302021) 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, 42429611 + ... + 42711776.

It is an arithmetic number, because the mean of its divisors is an integer number (817612748964).

Almost surely, 2^{12012002302121} is an apocalyptic number.

It is an amenable number.

12012002302121 is a deficient number, since it is larger than the sum of its proper divisors (1069801681303).

12012002302121 is a wasteful number, since it uses less digits than its factorization.

12012002302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85141640.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12012002302121 its reverse (12120320021021), we get a palindrome (24132322323142).

The spelling of 12012002302121 in words is "twelve trillion, twelve billion, two million, three hundred two thousand, one hundred twenty-one".