13304011621 has 2 divisors, whose sum is σ = 13304011622. Its totient is φ = 13304011620.

The previous prime is 13304011571. The next prime is 13304011639. The reversal of 13304011621 is 12611040331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12009091396 + 1294920225 = 109586^2 + 35985^2 .

It is a cyclic number.

It is not a de Polignac number, because 13304011621 - 2¹⁷ = 13303880549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13304011592 and 13304011601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13304011661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6652005810 + 6652005811.

It is an arithmetic number, because the mean of its divisors is an integer number (6652005811).

Almost surely, 2^13304011621 is an apocalyptic number.

It is an amenable number.

13304011621 is a deficient number, since it is larger than the sum of its proper divisors (1).

13304011621 is an equidigital number, since it uses as much as digits as its factorization.

13304011621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13304011621 its reverse (12611040331), we get a palindrome (25915051952).

The spelling of 13304011621 in words is "thirteen billion, three hundred four million, eleven thousand, six hundred twenty-one".