20441440211 has 4 divisors (see below), whose sum is σ = 20444669232. Its totient is φ = 20438211192.

The previous prime is 20441440157. The next prime is 20441440223. The reversal of 20441440211 is 11204414402.

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

It is a cyclic number.

It is not a de Polignac number, because 20441440211 - 2¹⁸ = 20441178067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20441446211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604996 + ... + 1617681.

It is an arithmetic number, because the mean of its divisors is an integer number (5111167308).

Almost surely, 2^20441440211 is an apocalyptic number.

20441440211 is a deficient number, since it is larger than the sum of its proper divisors (3229021).

20441440211 is an equidigital number, since it uses as much as digits as its factorization.

20441440211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229020.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 20441440211 its reverse (11204414402), we get a palindrome (31645854613).

It can be divided in two parts, 204414402 and 11, that multiplied together give a palindrome (2248558422).

The spelling of 20441440211 in words is "twenty billion, four hundred forty-one million, four hundred forty thousand, two hundred eleven".