13403220001021 has 2 divisors, whose sum is σ = 13403220001022. Its totient is φ = 13403220001020.

The previous prime is 13403220001019. The next prime is 13403220001043. The reversal of 13403220001021 is 12010002230431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10724806265625 + 2678413735396 = 3274875^2 + 1636586^2 .

It is a cyclic number.

It is not a de Polignac number, because 13403220001021 - 2¹ = 13403220001019 is a prime.

Together with 13403220001019, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13403220001021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13403220001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6701610000510 + 6701610000511.

It is an arithmetic number, because the mean of its divisors is an integer number (6701610000511).

Almost surely, 2^{13403220001021} is an apocalyptic number.

It is an amenable number.

13403220001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13403220001021 is an equidigital number, since it uses as much as digits as its factorization.

13403220001021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 13403220001021 its reverse (12010002230431), we get a palindrome (25413222231452).

The spelling of 13403220001021 in words is "thirteen trillion, four hundred three billion, two hundred twenty million, one thousand, twenty-one".