12021221112321 has 8 divisors (see below), whose sum is σ = 16112212591104. Its totient is φ = 7972188520880.

The previous prime is 12021221112319. The next prime is 12021221112331. The reversal of 12021221112321 is 12321112212021.

12021221112321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12021221112321 - 2¹ = 12021221112319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12021221112331) 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, 10489721166 + ... + 10489722311.

It is an arithmetic number, because the mean of its divisors is an integer number (2014026573888).

Almost surely, 2^{12021221112321} is an apocalyptic number.

It is an amenable number.

12021221112321 is a deficient number, since it is larger than the sum of its proper divisors (4090991478783).

12021221112321 is a wasteful number, since it uses less digits than its factorization.

12021221112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20979443671.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 12021221112321 its reverse (12321112212021), we get a palindrome (24342333324342).

The spelling of 12021221112321 in words is "twelve trillion, twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, three hundred twenty-one".