12000012020121 has 8 divisors (see below), whose sum is σ = 16126000405504. Its totient is φ = 7937015824080.

The previous prime is 12000012020111. The next prime is 12000012020179. The reversal of 12000012020121 is 12102021000021.

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

It is not a de Polignac number, because 12000012020121 - 2²¹ = 12000009922969 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000012020097 and 12000012020106.

It is not an unprimeable number, because it can be changed into a prime (12000012020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15748046890 + ... + 15748047651.

It is an arithmetic number, because the mean of its divisors is an integer number (2015750050688).

Almost surely, 2^{12000012020121} is an apocalyptic number.

It is an amenable number.

12000012020121 is a deficient number, since it is larger than the sum of its proper divisors (4125988385383).

12000012020121 is a wasteful number, since it uses less digits than its factorization.

12000012020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31496094671.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12000012020121 its reverse (12102021000021), we get a palindrome (24102033020142).

The spelling of 12000012020121 in words is "twelve trillion, twelve million, twenty thousand, one hundred twenty-one".