220400211 has 8 divisors (see below), whose sum is σ = 295739344. Its totient is φ = 145997280.

The previous prime is 220400177. The next prime is 220400227. The reversal of 220400211 is 112004022.

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

It is not a de Polignac number, because 220400211 - 2¹¹ = 220398163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220400611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233500 + ... + 234441.

It is an arithmetic number, because the mean of its divisors is an integer number (36967418).

Almost surely, 2^220400211 is an apocalyptic number.

220400211 is a deficient number, since it is larger than the sum of its proper divisors (75339133).

220400211 is a wasteful number, since it uses less digits than its factorization.

220400211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468101.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 220400211 is about 14845.8819542660. The cubic root of 220400211 is about 604.0469122445.

Adding to 220400211 its reverse (112004022), we get a palindrome (332404233).

The spelling of 220400211 in words is "two hundred twenty million, four hundred thousand, two hundred eleven".