13320002220121 has 2 divisors, whose sum is σ = 13320002220122. Its totient is φ = 13320002220120.

The previous prime is 13320002220073. The next prime is 13320002220131. The reversal of 13320002220121 is 12102220002331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13239155259225 + 80846960896 = 3638565^2 + 284336^2 .

It is an emirp because it is prime and its reverse (12102220002331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13320002220121 - 2⁹ = 13320002219609 is a prime.

It is not a weakly prime, because it can be changed into another prime (13320002220131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660001110060 + 6660001110061.

It is an arithmetic number, because the mean of its divisors is an integer number (6660001110061).

Almost surely, 2^{13320002220121} is an apocalyptic number.

It is an amenable number.

13320002220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320002220121 is an equidigital number, since it uses as much as digits as its factorization.

13320002220121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13320002220121 its reverse (12102220002331), we get a palindrome (25422222222452).

The spelling of 13320002220121 in words is "thirteen trillion, three hundred twenty billion, two million, two hundred twenty thousand, one hundred twenty-one".