12012002220121 has 8 divisors (see below), whose sum is σ = 12064064819040. Its totient is φ = 11960052190368.

The previous prime is 12012002220083. The next prime is 12012002220133. The reversal of 12012002220121 is 12102220021021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012002220121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012002220095 and 12012002220104.

It is not an unprimeable number, because it can be changed into a prime (12012002220191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27928411 + ... + 28355248.

It is an arithmetic number, because the mean of its divisors is an integer number (1508008102380).

Almost surely, 2^{12012002220121} is an apocalyptic number.

It is an amenable number.

12012002220121 is a deficient number, since it is larger than the sum of its proper divisors (52062598919).

12012002220121 is an equidigital number, since it uses as much as digits as its factorization.

12012002220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56284583.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12012002220121 its reverse (12102220021021), we get a palindrome (24114222241142).

The spelling of 12012002220121 in words is "twelve trillion, twelve billion, two million, two hundred twenty thousand, one hundred twenty-one".