12012122201221 has 8 divisors (see below), whose sum is σ = 12717427828320. Its totient is φ = 11314125441072.

The previous prime is 12012122201207. The next prime is 12012122201231. The reversal of 12012122201221 is 12210222121021.

12012122201221 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 12012122201221 - 2⁹ = 12012122200709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012122201231) 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, 1827213355 + ... + 1827219928.

It is an arithmetic number, because the mean of its divisors is an integer number (1589678478540).

Almost surely, 2^{12012122201221} is an apocalyptic number.

It is an amenable number.

12012122201221 is a deficient number, since it is larger than the sum of its proper divisors (705305627099).

12012122201221 is a wasteful number, since it uses less digits than its factorization.

12012122201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654433475.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12012122201221 its reverse (12210222121021), we get a palindrome (24222344322242).

The spelling of 12012122201221 in words is "twelve trillion, twelve billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-one".