20023000111 has 4 divisors (see below), whose sum is σ = 20045832232. Its totient is φ = 20000167992.

The previous prime is 20023000103. The next prime is 20023000121. The reversal of 20023000111 is 11100032002.

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 20023000111 - 2³ = 20023000103 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 (20023000121) 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, 11414745 + ... + 11416498.

It is an arithmetic number, because the mean of its divisors is an integer number (5011458058).

Almost surely, 2^20023000111 is an apocalyptic number.

20023000111 is a deficient number, since it is larger than the sum of its proper divisors (22832121).

20023000111 is an equidigital number, since it uses as much as digits as its factorization.

20023000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22832120.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20023000111 its reverse (11100032002), we get a palindrome (31123032113).

The spelling of 20023000111 in words is "twenty billion, twenty-three million, one hundred eleven", and thus it is an aban number.