13122231230221 has 16 divisors (see below), whose sum is σ = 13864235400000. Its totient is φ = 12385433765376.

The previous prime is 13122231230201. The next prime is 13122231230279. The reversal of 13122231230221 is 12203213222131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13122231230221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122231230201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5708955 + ... + 7670503.

It is an arithmetic number, because the mean of its divisors is an integer number (866514712500).

Almost surely, 2^{13122231230221} is an apocalyptic number.

It is an amenable number.

13122231230221 is a deficient number, since it is larger than the sum of its proper divisors (742004169779).

13122231230221 is a wasteful number, since it uses less digits than its factorization.

13122231230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962876.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13122231230221 its reverse (12203213222131), we get a palindrome (25325444452352).

The spelling of 13122231230221 in words is "thirteen trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred thirty thousand, two hundred twenty-one".