12012210222221 has 8 divisors (see below), whose sum is σ = 13104402122784. Its totient is φ = 10920047119920.

The previous prime is 12012210222209. The next prime is 12012210222251. The reversal of 12012210222221 is 12222201221021.

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 12012210222221 - 2¹⁴ = 12012210205837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012210222193 and 12012210222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012210222251) 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, 6322766 + ... + 8000111.

It is an arithmetic number, because the mean of its divisors is an integer number (1638050265348).

Almost surely, 2^{12012210222221} is an apocalyptic number.

12012210222221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12012210222221 is a deficient number, since it is larger than the sum of its proper divisors (1092191900563).

12012210222221 is a wasteful number, since it uses less digits than its factorization.

12012210222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14399131.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12012210222221 its reverse (12222201221021), we get a palindrome (24234411443242).

The spelling of 12012210222221 in words is "twelve trillion, twelve billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".