20244211 has 4 divisors (see below), whose sum is σ = 21801472. Its totient is φ = 18686952.

The previous prime is 20244199. The next prime is 20244239. The reversal of 20244211 is 11244202.

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 20244211 - 2¹⁷ = 20113139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20241211) 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, 778611 + ... + 778636.

It is an arithmetic number, because the mean of its divisors is an integer number (5450368).

Almost surely, 2^20244211 is an apocalyptic number.

20244211 is a deficient number, since it is larger than the sum of its proper divisors (1557261).

20244211 is a wasteful number, since it uses less digits than its factorization.

20244211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557260.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20244211 is about 4499.3567318007. The cubic root of 20244211 is about 272.5421128417.

Adding to 20244211 its reverse (11244202), we get a palindrome (31488413).

Subtracting from 20244211 its reverse (11244202), we obtain a palindrome (9000009).

The spelling of 20244211 in words is "twenty million, two hundred forty-four thousand, two hundred eleven".