20211113222305 has 4 divisors (see below), whose sum is σ = 24253335866772. Its totient is φ = 16168890577840.

The previous prime is 20211113222291. The next prime is 20211113222347. The reversal of 20211113222305 is 50322231111202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5237378715024 + 14973734507281 = 2288532^2 + 3869591^2 .

It is not a de Polignac number, because 20211113222305 - 2⁵ = 20211113222273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211113222305.

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 3 ways as a sum of consecutive naturals, for example, 2021111322226 + ... + 2021111322235.

It is an arithmetic number, because the mean of its divisors is an integer number (6063333966693).

Almost surely, 2^{20211113222305} is an apocalyptic number.

It is an amenable number.

20211113222305 is a deficient number, since it is larger than the sum of its proper divisors (4042222644467).

20211113222305 is an equidigital number, since it uses as much as digits as its factorization.

20211113222305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042222644466.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 20211113222305 its reverse (50322231111202), we get a palindrome (70533344333507).

The spelling of 20211113222305 in words is "twenty trillion, two hundred eleven billion, one hundred thirteen million, two hundred twenty-two thousand, three hundred five".