12301331112221 has 4 divisors (see below), whose sum is σ = 12301375333500. Its totient is φ = 12301286890944.

The previous prime is 12301331112199. The next prime is 12301331112241. The reversal of 12301331112221 is 12221113310321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2767198980100 + 9534132132121 = 1663490^2 + 3087739^2 .

It is a cyclic number.

It is not a de Polignac number, because 12301331112221 - 2⁶ = 12301331112157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12301331112241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21690716 + ... + 22250613.

It is an arithmetic number, because the mean of its divisors is an integer number (3075343833375).

Almost surely, 2^{12301331112221} is an apocalyptic number.

It is an amenable number.

12301331112221 is a deficient number, since it is larger than the sum of its proper divisors (44221279).

12301331112221 is an equidigital number, since it uses as much as digits as its factorization.

12301331112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44221278.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12301331112221 its reverse (12221113310321), we get a palindrome (24522444422542).

The spelling of 12301331112221 in words is "twelve trillion, three hundred one billion, three hundred thirty-one million, one hundred twelve thousand, two hundred twenty-one".