20200000111 has 4 divisors (see below), whose sum is σ = 20200285224. Its totient is φ = 20199715000.

The previous prime is 20200000099. The next prime is 20200000127. The reversal of 20200000111 is 11100000202.

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 a de Polignac number, because none of the positive numbers 2^k-20200000111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200000094 and 20200000103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200003111) 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, 54696 + ... + 208306.

It is an arithmetic number, because the mean of its divisors is an integer number (5050071306).

Almost surely, 2^20200000111 is an apocalyptic number.

20200000111 is a deficient number, since it is larger than the sum of its proper divisors (285113).

20200000111 is a wasteful number, since it uses less digits than its factorization.

20200000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285112.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20200000111 its reverse (11100000202), we get a palindrome (31300000313).

Subtracting from 20200000111 its reverse (11100000202), we obtain a palindrome (9099999909).

The spelling of 20200000111 in words is "twenty billion, two hundred million, one hundred eleven", and thus it is an aban number.