13221811705 has 8 divisors (see below), whose sum is σ = 16377986304. Its totient is φ = 10236241200.

The previous prime is 13221811697. The next prime is 13221811723. The reversal of 13221811705 is 50711812231.

13221811705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13221811705 - 2³ = 13221811697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42650851 + ... + 42651160.

It is an arithmetic number, because the mean of its divisors is an integer number (2047248288).

Almost surely, 2^13221811705 is an apocalyptic number.

It is an amenable number.

13221811705 is a deficient number, since it is larger than the sum of its proper divisors (3156174599).

13221811705 is an equidigital number, since it uses as much as digits as its factorization.

13221811705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85302047.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 13221811705 in words is "thirteen billion, two hundred twenty-one million, eight hundred eleven thousand, seven hundred five".