12222013221021 has 4 divisors (see below), whose sum is σ = 16296017628032. Its totient is φ = 8148008814012.

The previous prime is 12222013220947. The next prime is 12222013221113. The reversal of 12222013221021 is 12012231022221.

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 not a de Polignac number, because 12222013221021 - 2¹¹ = 12222013218973 is a prime.

It is a super-3 number, since 3×12222013221021³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222013221521) 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, 2037002203501 + ... + 2037002203506.

It is an arithmetic number, because the mean of its divisors is an integer number (4074004407008).

Almost surely, 2^{12222013221021} is an apocalyptic number.

It is an amenable number.

12222013221021 is a deficient number, since it is larger than the sum of its proper divisors (4074004407011).

12222013221021 is an equidigital number, since it uses as much as digits as its factorization.

12222013221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074004407010.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12222013221021 its reverse (12012231022221), we get a palindrome (24234244243242).

The spelling of 12222013221021 in words is "twelve trillion, two hundred twenty-two billion, thirteen million, two hundred twenty-one thousand, twenty-one".