2020020111 has 24 divisors (see below), whose sum is σ = 3023289360. Its totient is φ = 1298858496.

The previous prime is 2020020091. The next prime is 2020020127. The reversal of 2020020111 is 1110200202.

It is not a de Polignac number, because 2020020111 - 2⁷ = 2020019983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2020020093 and 2020020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020020161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7746 + ... + 64031.

It is an arithmetic number, because the mean of its divisors is an integer number (125970390).

Almost surely, 2^2020020111 is an apocalyptic number.

2020020111 is a deficient number, since it is larger than the sum of its proper divisors (1003269249).

2020020111 is a wasteful number, since it uses less digits than its factorization.

2020020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71895 (or 71892 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2020020111 is about 44944.6338398701. The cubic root of 2020020111 is about 1264.1110599736. Note that the first 3 decimals are identical.

Adding to 2020020111 its reverse (1110200202), we get a palindrome (3130220313).

The spelling of 2020020111 in words is "two billion, twenty million, twenty thousand, one hundred eleven".