13221221430404 has 24 divisors (see below), whose sum is σ = 25720688840448. Its totient is φ = 5905260191520.

The previous prime is 13221221430397. The next prime is 13221221430419. The reversal of 13221221430404 is 40403412212231.

It is a super-2 number, since 2×13221221430404² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4100873522 + ... + 4100876745.

It is an arithmetic number, because the mean of its divisors is an integer number (1071695368352).

Almost surely, 2^{13221221430404} is an apocalyptic number.

It is an amenable number.

13221221430404 is a deficient number, since it is larger than the sum of its proper divisors (12499467410044).

13221221430404 is a wasteful number, since it uses less digits than its factorization.

13221221430404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8201750315 (or 8201750313 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 13221221430404 its reverse (40403412212231), we get a palindrome (53624633642635).

The spelling of 13221221430404 in words is "thirteen trillion, two hundred twenty-one billion, two hundred twenty-one million, four hundred thirty thousand, four hundred four".