13404302221 has 2 divisors, whose sum is σ = 13404302222. Its totient is φ = 13404302220.

The previous prime is 13404302213. The next prime is 13404302269. The reversal of 13404302221 is 12220340431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13314621321 + 89680900 = 115389^2 + 9470^2 .

It is a cyclic number.

It is not a de Polignac number, because 13404302221 - 2³ = 13404302213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13404302192 and 13404302201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13404302201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6702151110 + 6702151111.

It is an arithmetic number, because the mean of its divisors is an integer number (6702151111).

Almost surely, 2^13404302221 is an apocalyptic number.

It is an amenable number.

13404302221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13404302221 is an equidigital number, since it uses as much as digits as its factorization.

13404302221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 13404302221 its reverse (12220340431), we get a palindrome (25624642652).

The spelling of 13404302221 in words is "thirteen billion, four hundred four million, three hundred two thousand, two hundred twenty-one".