12122110121021 has 8 divisors (see below), whose sum is σ = 12153268257984. Its totient is φ = 12090979995040.

The previous prime is 12122110121003. The next prime is 12122110121071. The reversal of 12122110121021 is 12012101122121.

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

It is a cyclic number.

It is not a de Polignac number, because 12122110121021 - 2²² = 12122105926717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122110121071) 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 7 ways as a sum of consecutive naturals, for example, 6135971 + ... + 7867296.

It is an arithmetic number, because the mean of its divisors is an integer number (1519158532248).

Almost surely, 2^{12122110121021} is an apocalyptic number.

It is an amenable number.

12122110121021 is a deficient number, since it is larger than the sum of its proper divisors (31158136963).

12122110121021 is a wasteful number, since it uses less digits than its factorization.

12122110121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14005491.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12122110121021 its reverse (12012101122121), we get a palindrome (24134211243142).

The spelling of 12122110121021 in words is "twelve trillion, one hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".