13221140505 has 8 divisors (see below), whose sum is σ = 21153824832. Its totient is φ = 7051274928.

The previous prime is 13221140489. The next prime is 13221140539. The reversal of 13221140505 is 50504112231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13221140505 - 2⁴ = 13221140489 is a prime.

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, 440704669 + ... + 440704698.

It is an arithmetic number, because the mean of its divisors is an integer number (2644228104).

Almost surely, 2^13221140505 is an apocalyptic number.

13221140505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13221140505 is a deficient number, since it is larger than the sum of its proper divisors (7932684327).

13221140505 is an equidigital number, since it uses as much as digits as its factorization.

13221140505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881409375.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 13221140505 its reverse (50504112231), we get a palindrome (63725252736).

The spelling of 13221140505 in words is "thirteen billion, two hundred twenty-one million, one hundred forty thousand, five hundred five".