20112211 has 8 divisors (see below), whose sum is σ = 23727104. Its totient is φ = 16682760.

The previous prime is 20112199. The next prime is 20112217. The reversal of 20112211 is 11221102.

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

It is a cyclic number.

It is not a de Polignac number, because 20112211 - 2⁵ = 20112179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46125 + ... + 46558.

It is an arithmetic number, because the mean of its divisors is an integer number (2965888).

Almost surely, 2^20112211 is an apocalyptic number.

20112211 is a deficient number, since it is larger than the sum of its proper divisors (3614893).

20112211 is an equidigital number, since it uses as much as digits as its factorization.

20112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92721.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 20112211 is about 4484.6639784938. The cubic root of 20112211 is about 271.9484610755.

Adding to 20112211 its reverse (11221102), we get a palindrome (31333313).

The spelling of 20112211 in words is "twenty million, one hundred twelve thousand, two hundred eleven".