12222311322221 has 16 divisors (see below), whose sum is σ = 16410376042368. Its totient is φ = 8791272878400.

The previous prime is 12222311322203. The next prime is 12222311322229.

12222311322221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12222311322221 - 2²⁶ = 12222244213357 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222311322229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6105049610 + ... + 6105051611.

It is an arithmetic number, because the mean of its divisors is an integer number (1025648502648).

Almost surely, 2^{12222311322221} is an apocalyptic number.

12222311322221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222311322221 is a deficient number, since it is larger than the sum of its proper divisors (4188064720147).

12222311322221 is a wasteful number, since it uses less digits than its factorization.

12222311322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12210101252.

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 1222231 and 1322221, that added together give a palindrome (2544452).

The spelling of 12222311322221 in words is "twelve trillion, two hundred twenty-two billion, three hundred eleven million, three hundred twenty-two thousand, two hundred twenty-one".