12221422412221 has 8 divisors (see below), whose sum is σ = 13342256906688. Its totient is φ = 11102220600000.

The previous prime is 12221422412179. The next prime is 12221422412233.

It is a happy number.

12221422412221 is nontrivially palindromic in base 10.

12221422412221 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 12221422412221 - 2⁷ = 12221422412093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12221422412221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221422712221) 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, 408154905 + ... + 408184846.

It is an arithmetic number, because the mean of its divisors is an integer number (1667782113336).

Almost surely, 2^{12221422412221} is an apocalyptic number.

12221422412221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12221422412221 is a deficient number, since it is larger than the sum of its proper divisors (1120834494467).

12221422412221 is a wasteful number, since it uses less digits than its factorization.

12221422412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816341123.

The product of its digits is 4096, while the sum is 28.

It can be divided in two parts, 1222142 and 2412221, that added together give a palindrome (3634363).

The spelling of 12221422412221 in words is "twelve trillion, two hundred twenty-one billion, four hundred twenty-two million, four hundred twelve thousand, two hundred twenty-one".