13130404421 has 2 divisors, whose sum is σ = 13130404422. Its totient is φ = 13130404420.

The previous prime is 13130404333. The next prime is 13130404453. The reversal of 13130404421 is 12440403131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12207156196 + 923248225 = 110486^2 + 30385^2 .

It is a cyclic number.

It is not a de Polignac number, because 13130404421 - 2²² = 13126210117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13130404481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565202210 + 6565202211.

It is an arithmetic number, because the mean of its divisors is an integer number (6565202211).

Almost surely, 2^13130404421 is an apocalyptic number.

It is an amenable number.

13130404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13130404421 is an equidigital number, since it uses as much as digits as its factorization.

13130404421 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 23.

Adding to 13130404421 its reverse (12440403131), we get a palindrome (25570807552).

The spelling of 13130404421 in words is "thirteen billion, one hundred thirty million, four hundred four thousand, four hundred twenty-one".