2020019111 has 4 divisors (see below), whose sum is σ = 2203657224. Its totient is φ = 1836381000.

The previous prime is 2020019093. The next prime is 2020019123. The reversal of 2020019111 is 1119100202.

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 2020019111 - 2⁶ = 2020019047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020019111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020019311) 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, 91819040 + ... + 91819061.

It is an arithmetic number, because the mean of its divisors is an integer number (550914306).

Almost surely, 2^2020019111 is an apocalyptic number.

2020019111 is a deficient number, since it is larger than the sum of its proper divisors (183638113).

2020019111 is a wasteful number, since it uses less digits than its factorization.

2020019111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183638112.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 2020019111 is about 44944.6227150702. The cubic root of 2020019111 is about 1264.1108513765.

Adding to 2020019111 its reverse (1119100202), we get a palindrome (3139119313).

It can be divided in two parts, 20200191 and 11, that added together give a palindrome (20200202).

The spelling of 2020019111 in words is "two billion, twenty million, nineteen thousand, one hundred eleven".