20201000111 has 8 divisors (see below), whose sum is σ = 20793262080. Its totient is φ = 19615507128.

The previous prime is 20201000093. The next prime is 20201000129. The reversal of 20201000111 is 11100010202.

It is an interprime number because it is at equal distance from previous prime (20201000093) and next prime (20201000129).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20201000111 - 2⁶ = 20201000047 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 (20201000311) 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 7 ways as a sum of consecutive naturals, for example, 1686191 + ... + 1698128.

It is an arithmetic number, because the mean of its divisors is an integer number (2599157760).

Almost surely, 2^20201000111 is an apocalyptic number.

20201000111 is a deficient number, since it is larger than the sum of its proper divisors (592261969).

20201000111 is a wasteful number, since it uses less digits than its factorization.

20201000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384493.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20201000111 its reverse (11100010202), we get a palindrome (31301010313).

The spelling of 20201000111 in words is "twenty billion, two hundred one million, one hundred eleven", and thus it is an aban number.