220211311 has 4 divisors (see below), whose sum is σ = 231801400. Its totient is φ = 208621224.

The previous prime is 220211291. The next prime is 220211323. The reversal of 220211311 is 113112022.

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 220211311 - 2⁵ = 220211279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220211291 and 220211300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220215311) 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, 5795016 + ... + 5795053.

It is an arithmetic number, because the mean of its divisors is an integer number (57950350).

Almost surely, 2^220211311 is an apocalyptic number.

220211311 is a deficient number, since it is larger than the sum of its proper divisors (11590089).

220211311 is a wasteful number, since it uses less digits than its factorization.

220211311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11590088.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 220211311 is about 14839.5185568805. The cubic root of 220211311 is about 603.8742913026.

Adding to 220211311 its reverse (113112022), we get a palindrome (333323333).

It can be divided in two parts, 22021 and 1311, that added together give a palindrome (23332).

The spelling of 220211311 in words is "two hundred twenty million, two hundred eleven thousand, three hundred eleven".