13430401221 has 16 divisors (see below), whose sum is σ = 18316019520. Its totient is φ = 8750947200.

The previous prime is 13430401181. The next prime is 13430401253. The reversal of 13430401221 is 12210403431.

It is not a de Polignac number, because 13430401221 - 2¹⁵ = 13430368453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13430401121) 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 in 15 ways as a sum of consecutive naturals, for example, 188680 + ... + 249921.

It is an arithmetic number, because the mean of its divisors is an integer number (1144751220).

Almost surely, 2^13430401221 is an apocalyptic number.

It is an amenable number.

13430401221 is a deficient number, since it is larger than the sum of its proper divisors (4885618299).

13430401221 is a wasteful number, since it uses less digits than its factorization.

13430401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438836.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 13430401221 its reverse (12210403431), we get a palindrome (25640804652).

The spelling of 13430401221 in words is "thirteen billion, four hundred thirty million, four hundred one thousand, two hundred twenty-one".