12221222021201 has 4 divisors (see below), whose sum is σ = 12221233514304. Its totient is φ = 12221210528100.

The previous prime is 12221222021191. The next prime is 12221222021219. The reversal of 12221222021201 is 10212022212221.

12221222021201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12221222021201 - 2¹⁰ = 12221222020177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221222021231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3968045 + ... + 6339386.

It is an arithmetic number, because the mean of its divisors is an integer number (3055308378576).

Almost surely, 2^{12221222021201} is an apocalyptic number.

It is an amenable number.

12221222021201 is a deficient number, since it is larger than the sum of its proper divisors (11493103).

12221222021201 is a wasteful number, since it uses less digits than its factorization.

12221222021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11493102.

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

Adding to 12221222021201 its reverse (10212022212221), we get a palindrome (22433244233422).

The spelling of 12221222021201 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, two hundred one".