20404422442211 has 4 divisors (see below), whose sum is σ = 20464969690152. Its totient is φ = 20343875194272.

The previous prime is 20404422442189. The next prime is 20404422442219. The reversal of 20404422442211 is 11224422440402.

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 20404422442211 - 2⁶ = 20404422442147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404422442219) 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, 30273623465 + ... + 30273624138.

It is an arithmetic number, because the mean of its divisors is an integer number (5116242422538).

Almost surely, 2^{20404422442211} is an apocalyptic number.

20404422442211 is a deficient number, since it is larger than the sum of its proper divisors (60547247941).

20404422442211 is an equidigital number, since it uses as much as digits as its factorization.

20404422442211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60547247940.

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 20404422442211 its reverse (11224422440402), we get a palindrome (31628844882613).

The spelling of 20404422442211 in words is "twenty trillion, four hundred four billion, four hundred twenty-two million, four hundred forty-two thousand, two hundred eleven".