2020120111 has 4 divisors (see below), whose sum is σ = 2020231224. Its totient is φ = 2020009000.

The previous prime is 2020120087. The next prime is 2020120127. The reversal of 2020120111 is 1110210202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2020120111 - 2²⁹ = 1483249199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020120511) 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, 21205 + ... + 67006.

It is an arithmetic number, because the mean of its divisors is an integer number (505057806).

Almost surely, 2^2020120111 is an apocalyptic number.

2020120111 is a deficient number, since it is larger than the sum of its proper divisors (111113).

2020120111 is an equidigital number, since it uses as much as digits as its factorization.

2020120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111112.

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

The square root of 2020120111 is about 44945.7463059631. The cubic root of 2020120111 is about 1264.1319193402.

Adding to 2020120111 its reverse (1110210202), we get a palindrome (3130330313).

Subtracting from 2020120111 its reverse (1110210202), we obtain a palindrome (909909909).

The spelling of 2020120111 in words is "two billion, twenty million, one hundred twenty thousand, one hundred eleven".