12223255232221 has 4 divisors (see below), whose sum is σ = 13334460253344. Its totient is φ = 11112050211100.

The previous prime is 12223255232213. The next prime is 12223255232233.

12223255232221 is nontrivially palindromic in base 10.

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 12223255232221 - 2³ = 12223255232213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223255232291) 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, 555602510545 + ... + 555602510566.

It is an arithmetic number, because the mean of its divisors is an integer number (3333615063336).

Almost surely, 2^{12223255232221} is an apocalyptic number.

12223255232221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12223255232221 is a deficient number, since it is larger than the sum of its proper divisors (1111205021123).

12223255232221 is a wasteful number, since it uses less digits than its factorization.

12223255232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111205021122.

The product of its digits is 57600, while the sum is 34.

It can be divided in two parts, 1222325 and 5232221, that added together give a palindrome (6454546).

The spelling of 12223255232221 in words is "twelve trillion, two hundred twenty-three billion, two hundred fifty-five million, two hundred thirty-two thousand, two hundred twenty-one".