2020111211 has 4 divisors (see below), whose sum is σ = 2020573800. Its totient is φ = 2019648624.

The previous prime is 2020111193. The next prime is 2020111213. The reversal of 2020111211 is 1121110202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020111211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020111192 and 2020111201.

It is not an unprimeable number, because it can be changed into a prime (2020111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224681 + ... + 233498.

It is an arithmetic number, because the mean of its divisors is an integer number (505143450).

Almost surely, 2^2020111211 is an apocalyptic number.

2020111211 is a deficient number, since it is larger than the sum of its proper divisors (462589).

2020111211 is an equidigital number, since it uses as much as digits as its factorization.

2020111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462588.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2020111211 is about 44945.6472975971. The cubic root of 2020111211 is about 1264.1300628845.

Adding to 2020111211 its reverse (1121110202), we get a palindrome (3141221413).

The spelling of 2020111211 in words is "two billion, twenty million, one hundred eleven thousand, two hundred eleven".