12221325100445 has 8 divisors (see below), whose sum is σ = 14707135703736. Its totient is φ = 9749363024896.

The previous prime is 12221325100441. The next prime is 12221325100463. The reversal of 12221325100445 is 54400152312221.

It can be written as a sum of positive squares in 4 ways, for example, as 4657538045689 + 7563787054756 = 2158133^2 + 2750234^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12221325100445 - 2² = 12221325100441 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 (12221325100441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3462129992 + ... + 3462133521.

It is an arithmetic number, because the mean of its divisors is an integer number (1838391962967).

Almost surely, 2^{12221325100445} is an apocalyptic number.

It is an amenable number.

12221325100445 is a deficient number, since it is larger than the sum of its proper divisors (2485810603291).

12221325100445 is an equidigital number, since it uses as much as digits as its factorization.

12221325100445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924263871.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 12221325100445 its reverse (54400152312221), we get a palindrome (66621477412666).

The spelling of 12221325100445 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty-five million, one hundred thousand, four hundred forty-five".